Pyramidal molars-abnormal upper lip syndrome is a very rare genetic condition that mainly affects the shape of the back teeth and the upper lip. Many people with Pyramidal molars-abnormal upper lip syndrome have unusually shaped molars, and some also have a thin or otherwise distinctive upper lip. These features are usually noticed in childhood when permanent teeth begin to appear, and the condition is generally lifelong. Not everyone will have the same experience, but early symptoms of Pyramidal molars-abnormal upper lip syndrome are often picked up during a dental exam rather than from pain or illness. Treatment focuses on dental care, monitoring, and supportive specialist care as needed, and Pyramidal molars-abnormal upper lip syndrome is not generally known to shorten life expectancy.
How many people live with Pyramidal molars-abnormal upper lip syndrome?
Pyramidal molars-abnormal upper lip syndrome is so rare that a recent worldwide estimate is not consistently reported by a single authoritative source; rare-disease references describe it as an extremely rare condition and do not give a firm global count (Orphanet, 2024). A current United States estimate is also not available from a named national registry or public health source, so there is no reliable published number for how many people are living with it in the U.S.
Overview
Pyramidal molars-abnormal upper lip syndromeSymptoms
Pyramidal molars-abnormal upper lip syndrome is mainly marked by unusually shaped back teeth and a distinctive upper lip. Some children also have other facial differences, so the signs of Pyramidal molars-abnormal upper lip syndrome are often first noticed in childhood.
Outlook and prognosis
People with pyramidal molars-abnormal upper lip syndrome usually have a good outlook. The main issues are tooth shape changes and the upper lip difference, which are present early and usually stay stable. Regular dental care can improve comfort and chewing.
Causes and risk factors
Pyramidal molars-abnormal upper lip syndrome is usually linked to a genetic change that begins before birth. It may run in families or happen for the first time in one child. Lifestyle and environmental factors are not known primary causes.
Genetic influences
Genetics are central to Pyramidal molars-abnormal upper lip syndrome. It is usually caused by a disease-causing gene change, and genetic testing can help confirm the diagnosis, guide family counseling, and clarify the chance of it happening again.
Diagnosis
Diagnosis of Pyramidal molars-abnormal upper lip syndrome usually starts with a clinician noting key clinical features, especially the shape of the teeth and upper lip. Genetic tests may help confirm the diagnosis and rule out similar genetic conditions.
Treatment and drugs
Treatment for Pyramidal molars-abnormal upper lip syndrome focuses on the teeth and lip changes. Many need regular dental and orthodontic care, and some benefit from lip repair if feeding, speech, or appearance is affected. Follow-up is tailored to each child’s needs.
Symptoms
Pyramidal molars-abnormal upper lip syndrome mainly affects the shape of some back teeth and the look of the upper lip. The early features of Pyramidal molars-abnormal upper lip syndrome may become easier to spot as the molars come in or during a routine dental visit. Features vary from person to person and can become more noticeable over time.
Some of the back teeth may look more pointed or pyramid-shaped than usual, often first noticed by a dentist on an exam or X-ray. This can affect how the teeth fit together, so chewing may feel less efficient and food may collect in hard-to-clean areas.
The upper lip may have an unusual contour, fullness, or outline compared with what is typical in a family. For many people with Pyramidal molars-abnormal upper lip syndrome, this mostly affects appearance, though some may also notice mild differences in lip closure or certain speech sounds.
How people usually first notice Pyramidal molars-abnormal upper lip syndrome?
Pyramidal molars-abnormal upper lip syndrome is usually first noticed early in life, often when a baby is born with an unusual upper lip shape and later, as the teeth begin to come in, dentists or parents notice molars that look unusually pointed or pyramid-shaped. In many living with this rare genetic condition, the first signs of pyramidal molars-abnormal upper lip syndrome are these visible differences in the mouth rather than symptoms the child can describe. Because the condition is uncommon, families often first hear about it after a doctor or dentist connects the lip finding with the distinctive molar shape during routine checkups.
Types of Pyramidal molars-abnormal upper lip syndrome
No distinct types of Pyramidal molars-abnormal upper lip syndrome are widely recognized.
Can I slow down the onset of symptoms?
No, for pyramidal molars-abnormal upper lip syndrome, there is no good evidence that lifestyle changes or medicines can meaningfully delay when symptoms or physical features begin. This is a rare genetic condition, and its main features are usually set during early growth and development, so care focuses on early dental and medical follow-up to spot problems early and support day-to-day health, not on preventing the condition. While early care may help with comfort and function, it cannot stop the syndrome from happening, but staying connected with experienced doctors can still make a real difference in managing it well.
What genetics can tell you about symptoms
Genetics can help confirm the diagnosis of pyramidal molars-abnormal upper lip syndrome, but it usually cannot predict every symptom with certainty. In rare genetic conditions like this, the same genetic change can sometimes lead to different features from one person to another, including differences in how noticeable the tooth changes or upper lip differences are and when they are first recognized. For many living with this syndrome, genetics gives part of the picture, while the exact mix and severity of symptoms still need to be understood through dental and medical evaluation.
Causes and risk factors
Pyramidal molars-abnormal upper lip syndrome usually comes from a genetic change that affects how the teeth and upper lip develop before birth. This gene change may be inherited from a parent or may happen for the first time in a child. The main known risk factor is a family history of Pyramidal molars-abnormal upper lip syndrome. Lifestyle and environmental exposures are not known to be primary causes, but they can affect overall dental health and how noticeable the features are. Genetic testing can sometimes clarify your personal risk.
What are the most common causes or risk factors?
Pyramidal molars-abnormal upper lip syndrome is a very rare condition that is thought to start during early development before birth, most likely because of a genetic change. In some families it may be inherited, so having a close relative with the condition can raise the chance, but many living with it are the first known person in their family to have it. There are no well-established lifestyle, diet, or pregnancy-related risk factors known at this time, and nothing suggests that a parent caused it by anything they did or did not do.
Environmental and biological risk factors
For pyramidal molars-abnormal upper lip syndrome, there are no well-established environmental or non-genetic biological risk factors that doctors can point to today. Most reported cases are very rare and do not show a clear pattern linked to pregnancy exposures, parental health, or birth events. Awareness of both biological and environmental influences helps you feel prepared, but for this syndrome the main non-genetic risks remain unclear.
Genetic risk factors
Pyramidal molars-abnormal upper lip syndrome appears to have a genetic basis, but it is so rare that many details are still uncertain. Most of what doctors know comes from a very small number of reported families, so family history is the clearest known genetic risk factor. In practice, the main questions are whether the condition runs in a family and whether the gene change was inherited or started for the first time in one person.
Exact gene unknown: Researchers have not yet confirmed a single gene as the cause of pyramidal molars-abnormal upper lip syndrome. Because only a few families have been described, the genetic causes of Pyramidal molars-abnormal upper lip syndrome are still being clarified.
Family history: Having a close relative with this syndrome can raise the chance that it may appear in other family members. This is especially relevant when similar tooth and lip changes are seen across more than one generation.
Possible dominant pattern: Reported family patterns suggest the syndrome may sometimes be inherited in an autosomal dominant way, which means one altered copy of a gene could be enough to cause it. If that pattern is confirmed in a family, each child of an affected parent would have a 1 in 2, or 50%, chance of inheriting the change.
New gene change: Some people with a rare genetic syndrome are the first in their family to have it because of a new genetic change. When this happens, the condition is still genetic even if no one else in the family has similar features.
Lifestyle risk factors
Pyramidal molars-abnormal upper lip syndrome is a rare congenital condition, so lifestyle habits do not cause it. Even so, how lifestyle affects Pyramidal molars-abnormal upper lip syndrome can matter for dental wear, oral comfort, feeding, and day-to-day symptom control. Because published data are limited, the most relevant lifestyle risk factors for Pyramidal molars-abnormal upper lip syndrome are habits that influence oral health and mechanical stress on the teeth and lips.
Incomplete brushing, irregular flossing, and inconsistent dental follow-up can make abnormal tooth shape harder to manage. This can raise the risk of plaque buildup, cavities, gum inflammation, and secondary damage around unusually formed molars.
Frequent sugary snacks, sweet drinks, and constant grazing increase acid exposure on the teeth. In a person with pyramidal or otherwise atypical molars, this may worsen decay risk and make cleaning difficult areas even more important.
Regular intake of acidic drinks or foods can erode enamel and increase tooth sensitivity. If the molars are structurally unusual, added enamel wear may further impair chewing comfort and long-term dental durability.
Hard candies, ice chewing, nail biting, or using teeth as tools can place extra stress on teeth with abnormal shape. This may increase the chance of chipping, cracking, bite problems, or jaw discomfort over time.
Risk prevention
Pyramidal molars-abnormal upper lip syndrome is a rare genetic condition, so there is no known way to prevent the syndrome itself from occurring. For many living with this condition, prevention is mainly about lowering the risk of dental problems, feeding trouble, speech concerns, and other day-to-day complications through early care. Because features can vary from one person to another, prevention is flexible—it adapts to your life and health background. Early support can also make it easier to spot related issues before they become bigger problems.
If this syndrome has been diagnosed in your family, genetic counseling can help you understand the chance of it happening again in a future pregnancy. This does not prevent the condition itself, but it can support informed family planning and early care.
Regular dental visits can help protect unusually shaped molars from decay, wear, and bite problems. For many with pyramidal molars-abnormal upper lip syndrome, early dental monitoring may also reduce pain and the need for more complex treatment later.
Careful brushing with fluoride toothpaste and regular flossing can lower the risk of cavities and gum disease. This matters even more when tooth shape makes cleaning harder or food gets trapped easily.
Babies and children who have lip differences or mouth structure changes may benefit from early feeding advice. Small adjustments in positioning, nipple choice, or texture can help reduce choking, poor weight gain, and mealtime stress.
Can you prevent Pyramidal molars-abnormal upper lip syndrome?
No, this condition usually cannot be prevented because it is caused by a genetic change that happens before birth. There is no good evidence that diet, activity, stress, or something a parent did during pregnancy causes it. If it has happened in your family, genetic counseling before pregnancy may help you understand the chance of it happening again, but it cannot fully prevent it.
Transmission
Pyramidal molars-abnormal upper lip syndrome is not infectious, so it does not spread through coughing, kissing, sharing food, or everyday contact. Instead, it is a rare genetic condition that is present from birth, and the genetic transmission of Pyramidal molars-abnormal upper lip syndrome would happen from a parent to a child rather than from one person to another.
Because so few families have been reported, the exact inheritance pattern is not always clear. In some families, the gene change may be passed down, while in others it may happen for the first time in a child as a new genetic change.
When to test your genes
Because this is a rare genetic condition present from birth, gene testing is usually considered when a child has unusual molars, an abnormal upper lip, related facial or dental features, or a family history of similar findings. Testing can help confirm the diagnosis and guide dental, craniofacial, and genetic counseling.
Diagnosis
Diagnosis of Pyramidal molars-abnormal upper lip syndrome usually starts when unusual tooth shape and changes in the upper lip are noticed during a dental or medical exam. Because this is a rare genetic condition, doctors often rely on a careful review of visible features and then use targeted tests to confirm what they are seeing. Getting a diagnosis is often a turning point toward answers and support.
Doctors look closely at the teeth, lips, mouth, and facial features for the pattern linked with Pyramidal molars-abnormal upper lip syndrome. They also check whether the findings fit together in a way that suggests a genetic condition rather than a common dental variation.
A dentist or specialist may use a detailed oral exam to identify the characteristic molars and other tooth differences. These clinical features are often central to the diagnosis of Pyramidal molars-abnormal upper lip syndrome.
X-rays of the teeth and jaws can show the shape, position, and development of the molars more clearly. Imaging findings can help confirm unusual dental structure and rule out other causes of abnormal tooth appearance.
The upper lip is examined for shape changes or structural differences that are part of the syndrome pattern. This helps doctors connect mouth findings with facial features instead of viewing them as separate problems.
How is Pyramidal molars-abnormal upper lip syndrome diagnosed?
Doctors usually diagnose pyramidal molars-abnormal upper lip syndrome by recognizing the pattern of features that occur together, especially unusually shaped back teeth seen on a dental exam or X-rays and the typical shape of the upper lip. They may also review medical and family history and look for any other physical changes linked with the syndrome. Because it is very rare, a doctor with experience in genetic conditions may help with the diagnosis, and genetic testing may sometimes be used to support it or rule out other conditions with similar signs.
Stages of Pyramidal molars-abnormal upper lip syndrome
Pyramidal molars-abnormal upper lip syndrome does not have defined progression stages. That is because it is a rare genetic condition identified by a pattern of physical features rather than a disease that typically moves through set phases over time. Doctors usually start with a conversation about growth, development, dental changes, and family history, along with an exam of the teeth, lips, and other body features. In many living with this condition, the earliest signs of Pyramidal molars-abnormal upper lip syndrome are noticed when adult teeth come in or when a child is being checked for differences in facial features, and genetic testing may be used to help confirm the diagnosis.
Outlook and prognosis
The outlook for people with pyramidal molars-abnormal upper lip syndrome is not well defined because it is extremely rare and has been described in only a small number of patients. In reported cases, the main issues appear to be dental and facial differences, so prognosis is generally thought to be favorable when there are no major abnormalities affecting other organs or development. Most affected individuals would be expected to benefit from dental, orthodontic, and craniofacial follow-up to manage function and appearance over time. There is no clear evidence that the syndrome itself shortens life expectancy, and disease-specific mortality has not been reported in the medical literature. Overall, long-term outcome is usually driven by the severity of each person's associated features and how effectively supportive care is provided.
Long-term effects
For many living with Pyramidal molars-abnormal upper lip syndrome, the long-term picture is often shaped by lifelong differences in tooth shape and the upper lip rather than a worsening body-wide illness. Long-term effects vary widely, and many of the main issues relate to dental alignment, chewing, speech clarity, and appearance. In childhood, these features may become more noticeable as adult teeth come in, while in adulthood the focus is often on lasting dental function and cosmetic concerns. Because this condition is very rare, the severity and long-term course can differ from one person to another.
Pyramidal molars-abnormal upper lip syndrome can cause unusual molar shape that stays present over time because it develops with the teeth. As permanent teeth come in, this may affect how the back teeth fit together and how evenly pressure is spread when chewing.
Many people with Pyramidal molars-abnormal upper lip syndrome may have crowding, spacing, or a bite that does not line up well. Over years, this can make chewing less efficient and may contribute to extra wear on some teeth.
Changes in tooth shape and lip structure can sometimes affect how food is bitten, held, or chewed. In some people, this means meals take longer or certain textures are harder to manage.
If the upper lip shape changes how the lips close or move, some sounds may be harder to form clearly. This can be more noticeable in childhood, when speech is still developing, and may persist into adult life for some.
How is it to live with Pyramidal molars-abnormal upper lip syndrome?
Living with pyramidal molars-abnormal upper lip syndrome often means managing a condition that shows up in the mouth and face, where differences in tooth shape and the upper lip can affect appearance, dental care, and sometimes everyday tasks such as biting, chewing, or speaking clearly. For many living with this syndrome, daily life may include regular visits with dental and medical specialists, extra attention to oral hygiene, and, in some cases, treatment to improve function or appearance.
Because this is a rare congenital condition, the impact can vary from one person to another, but families may also feel the ripple effects through frequent appointments, planning for treatment, and helping a child or loved one cope with self-consciousness or social questions. Even so, with supportive care and practical accommodations, many people with this syndrome can adapt well and build a steady, full daily routine.
Treatment and drugs
Treatment for pyramidal molars-abnormal upper lip syndrome usually focuses on the problems it causes in daily life, since there is no medicine that fixes the underlying genetic change. Care often includes regular dental care, and some people may need orthodontic treatment, repair of unusual tooth shape, or help planning for teeth that erupt or fit together differently, while lip or mouth differences may sometimes be assessed by craniofacial, oral surgery, or speech specialists. In children, care is often adjusted as the face and teeth grow, so treatment may change over time depending on symptoms and how severe the features are. Treatment plans often combine several approaches. If you are looking into treatment for pyramidal molars-abnormal upper lip syndrome, it helps to have follow-up with specialists who can coordinate dental, facial, and developmental care.
Can you cure Pyramidal molars-abnormal upper lip syndrome?
No, there is currently no cure for pyramidal molars-abnormal upper lip syndrome. Because it is a rare genetic condition, treatment cannot remove the underlying cause, but doctors and dentists can help manage the problems it causes, such as tooth and mouth issues, and keep track of health needs over time.
Non-drug treatment
Daily care for people with Pyramidal molars-abnormal upper lip syndrome usually centers on supportive therapies rather than medicines. Treatment is tailored to the problems a child or adult is actually having, such as unusual tooth shape, lip differences, feeding trouble, speech issues, or delayed development. For many, treatment begins not at the pharmacy, but with coordinated care from dental, speech, and rehabilitation specialists. Not every approach works the same way, so care plans often change as a child grows.
Regular dental visits are often a main part of care for Pyramidal molars-abnormal upper lip syndrome because unusual molars can affect chewing, cleaning, and cavity risk. Dentists may use preventive treatments, sealants, and careful monitoring to manage tooth wear or decay.
Braces, expanders, or other orthodontic devices may help if the teeth do not line up well or the bite is off. This can make eating easier and may improve comfort, cleaning, and jaw function over time.
If lip shape or dental differences affect clear speech, speech therapy can help with sound production and everyday communication. Some families seek help when they notice early symptoms of Pyramidal molars-abnormal upper lip syndrome such as feeding and speech concerns in infancy or early childhood.
Infants and young children who have trouble latching, chewing, or moving food in the mouth may benefit from feeding therapy. Structured programs, like oral-motor support and texture practice, can help make meals safer and less stressful.
Your genes may have an impact on how drugs work for you
For people living with pyramidal molars-abnormal upper lip syndrome, there is no well-established evidence that this condition itself changes how the body responds to medicines in a predictable, gene-based way. In everyday life, that means treatment is usually chosen based on the person’s symptoms, such as dental needs or any related health concerns, rather than on special genetic drug testing. Even so, doctors still look at the whole picture, because age, other medical problems, and other medicines can all affect side effects and how well a treatment works.
Pharmacological treatments
For people living with Pyramidal molars-abnormal upper lip syndrome, there is no specific medicine that treats the underlying genetic condition itself. Care is usually centered on dental treatment, monitoring, and supportive care, with medicines used only for related problems such as pain or infection. Medication is often just one chapter in care, especially if dental abnormalities lead to discomfort or repeated procedures.
There is no approved medicine that corrects the dental and lip changes seen in Pyramidal molars-abnormal upper lip syndrome. Treatment is usually guided by symptoms and by what is found during dental and medical follow-up.
Acetaminophen or nonsteroidal anti-inflammatory drugs such as ibuprofen may be used for mouth pain, especially after dental work. These medicines help with comfort but do not change the condition itself.
Antibiotics may be prescribed if a tooth or gum infection develops. This can matter if the dental findings in Pyramidal molars-abnormal upper lip syndrome make it easier for plaque to build up or for teeth to be hard to clean.
Local anesthetics are commonly used during dental procedures to numb the area being treated. Some people may also need sedation or general anesthesia for more complex dental care, depending on age, comfort, and the extent of treatment.
Genetic influences
The pattern seen in Pyramidal molars-abnormal upper lip syndrome suggests that genetics are likely involved, because the teeth and upper lip develop differently very early in growth before birth. Because this syndrome is extremely rare, the exact gene change behind it has not been clearly confirmed, and the usual inheritance pattern is still uncertain. It’s natural to ask whether family history plays a role. If close relatives have similar tooth differences, an unusual upper lip shape, or a related diagnosis, that information can help doctors judge whether Pyramidal molars-abnormal upper lip syndrome may run in your family. Genetic counseling may be useful if your family wants to understand the chance of Pyramidal molars-abnormal upper lip syndrome happening again in another child, even when testing cannot yet give a definite answer. For many, this means doctors rely on the overall pattern of features and family history, rather than a single lab test, when looking at the genetic side of this condition.
Is Pyramidal molars-abnormal upper lip syndrome genetic?
Genetics are central to Pyramidal molars-abnormal upper lip syndrome. It is usually caused by a disease-causing gene change, and genetic testing can help confirm the diagnosis, guide family counseling, and clarify the chance of it happening again.
Having a genetic risk is not necessarily a diagnosis
Gene variants are common throughout the general population and are an expected part of human biology. Most do not directly affect health and are simply part of the normal range of human diversity. For many genes, having a variant associated with a condition indicates a possible link rather than a certain diagnosis, especially when several genes and environmental factors are involved. There are also situations in which one well-characterized variant in a specific gene is sufficient to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
For many living with Pyramidal molars-abnormal upper lip syndrome, treatment is usually focused on dental care, oral function, and appearance rather than on a medicine that targets the condition itself. A child may need early dental follow-up, orthodontic planning, or short-term pain relief around procedures, while lip or mouth differences may sometimes be managed with surgery or speech support. When people ask about drugs used to treat Pyramidal molars-abnormal upper lip syndrome, medicines are generally chosen for specific problems such as pain or infection, not for the underlying genetic change. Genetics is only one factor, and at this time there are no well-established pharmacogenetic guidelines that change routine prescribing specifically for Pyramidal molars-abnormal upper lip syndrome. If genetic testing identifies the cause, it can still be useful because it may confirm the diagnosis, help doctors watch for related features, and support family planning discussions. In practice, doctors usually tailor treatment to the person’s symptoms, age, dental findings, and overall health.
Interactions with other conditions
For many living with Pyramidal molars-abnormal upper lip syndrome, the main day-to-day issues are usually related to the teeth and the shape of the upper lip rather than to a long list of other diseases. Because this condition is very rare, there is no clear evidence that Pyramidal molars-abnormal upper lip syndrome regularly causes major interactions with common illnesses such as diabetes, heart disease, or autoimmune conditions. Certain diseases may overlap, meaning doctors may look for other craniofacial, dental, or developmental conditions if symptoms do not fit neatly into one diagnosis. In practice, this can matter when feeding problems, speech concerns, or dental crowding are also present, since another condition could add to those challenges and change the care plan. If there are signs beyond the usual features, such as delayed development or unexpected medical problems, a genetics or craniofacial team may check whether another syndrome is present as well.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Pyramidal molars-abnormal upper lip syndrome?
Other conditions that can look similar include Van der Woude syndrome, which can cause changes in the upper lip, and ectodermal dysplasia, a group of inherited conditions that can affect how the teeth and mouth develop. Some people may also have similar features from an isolated cleft lip or other tooth-development conditions, so doctors usually look at the full pattern of tooth shape, lip changes, and family history before deciding on the cause.
History
Families sometimes first recognize this condition through a pattern of physical differences rather than illness. Pyramidal molars-abnormal upper lip syndrome was identified from repeated reports of people who shared a similar mix of unusually shaped back teeth and a distinctive upper lip appearance, along with other facial or developmental features that could vary from one person to another.
Initially understood only through symptoms, later medical reports helped show that this was a recognizable syndrome rather than a chance grouping of traits. Early descriptions came from careful clinical observation, often when dentists or doctors noticed that the molars had a different shape than expected and that these dental findings appeared alongside lip and facial differences. As more cases were described, it became clearer that not everyone was affected in exactly the same way. Some people had more noticeable dental changes, while others had a broader set of features.
Over time, better imaging, improved dental assessment, and more detailed genetic research helped confirm that Pyramidal molars-abnormal upper lip syndrome belongs to a group of rare genetic conditions. That shift mattered in everyday life. For many living with Pyramidal molars-abnormal upper lip syndrome, it meant the condition could be recognized earlier, sometimes after a child’s teeth came in or when a dentist flagged an unusual molar shape during a routine visit.
In recent decades, awareness has grown, though the condition remains rare and many clinicians may never see a case firsthand. Today, doctors understand much more about the range of features and the importance of coordinated care, including dental follow-up and evaluation for any related developmental concerns. Knowing this history also helps explain why early symptoms of Pyramidal molars-abnormal upper lip syndrome may be missed at first: the signs can be subtle, and recognition has depended on piecing together observations from both medicine and dentistry over time.