Developmental Oral and Maxillofacial Conditions

What are orofacial clefts and what causes them?

Orofacial clefts (CL, CP, CL±CP) are gaps in the facial structure caused by defective fusion of facial processes, influenced by genetic and environmental factors such as smoking, maternal alcohol use, anticonvulsant drugs, folic acid deficiency, and retinoids.

What are the clinical features of orofacial clefts?

Clinical features include facial gaps, feeding and speech issues, and variations in severity (unilateral, bilateral, complete, or incomplete). Cleft palates may also be submucous.

What is the treatment and prognosis for orofacial clefts?

Treatment involves multidisciplinary care, early surgical repair, orthodontics, speech therapy, and genetic counseling.

What are commissural lip pits and their clinical features?

Commissural lip pits are congenital small mucosal invaginations at the corners of the mouth, usually asymptomatic, and may be associated with preauricular pits.

What is the treatment for commissural lip pits?

No treatment is necessary unless they become infected or cause excessive secretion.

What are paramedian lip pits and their association with syndromes?

Paramedian lip pits are bilateral lower lip pits associated with Van der Woude Syndrome, which may include cleft lip and/or cleft palate and possible hypodontia.

What is the cause and treatment for paramedian lip pits?

They are caused by an autosomal dominant IRF6 mutation, and treatment may involve surgical excision if there is a cosmetic concern.

What is Van der Woude Syndrome?

Van der Woude Syndrome is the most common form of syndromic clefting, characterized by cleft lip and/or palate, paramedian lip pits, and possible hypodontia.

What is double lip and its clinical features?

Double lip is a congenital or acquired condition characterized by a redundant fold of lip tissue, more common in the upper lip, visible when smiling, and may be associated with blepharochalasis and non-toxic thyroid enlargement.

What is the treatment for double lip?

Surgical excision is recommended if the condition is severe or causes cosmetic concern.

What are Fordyce granules and their clinical features?

Fordyce granules are ectopic sebaceous glands in the oral mucosa, presenting as yellow papules on the buccal mucosa or upper lip vermilion, and are common and benign.

What is the treatment for Fordyce granules?

No treatment is necessary.

What is leukoedema and its clinical features?

Leukoedema is characterized by diffuse milky-white buccal mucosa that disappears when stretched, more common in Black individuals.

What is the treatment for leukoedema?

No treatment is necessary.

What is microglossia and its clinical features?

Microglossia (hypoglossia) is characterized by an abnormally small tongue that may affect speech and feeding, often associated with missing lower incisors.

What is the treatment for microglossia?

Surgery or orthodontics may be required if functional issues arise, depending on severity.

What is macroglossia and its clinical features?

Macroglossia is characterized by a large tongue, leading to speech and feeding issues, malocclusion, and increased risk of sleep apnea and drooling.

What is the treatment for macroglossia?

Treatment involves addressing the underlying cause, with reduction surgery if necessary.

What is ankyloglossia and its clinical features?

Ankyloglossia (tongue tie) is caused by a short lingual frenum, leading to limited tongue movement, which can cause breastfeeding and speech issues.

What is the treatment for ankyloglossia?

Frenotomy or frenuloplasty is performed if symptomatic.

What is lingual thyroid and its clinical features?

Lingual thyroid results from failure of thyroid descent during development, presenting as a nodular mass at the tongue base with potential dysphagia, dysphonia, and dyspnea.

What is the treatment for lingual thyroid?

Hormone suppression is used, with surgical removal if symptomatic.

What is Melkersson-Rosenthal Syndrome?

Melkersson-Rosenthal Syndrome is characterized by a fissured tongue, facial nerve palsy, and orofacial granulomatosis.

What is fissured tongue and its clinical features?

Fissured tongue (scrotal tongue) presents as multiple grooves on the dorsal tongue and is usually asymptomatic.

What is the treatment for fissured tongue?

No treatment is necessary; maintaining oral hygiene is recommended.

What is hairy/coated tongue and its clinical features?

Hairy/coated tongue is due to keratin overgrowth on filiform papillae, resulting in brown/black elongated papillae on the dorsal tongue and possible bad breath.

What is the treatment for hairy/coated tongue?

Improving oral hygiene and tongue scraping are recommended.

What are varicosities and their clinical features?

Varicosities are age-related vascular changes presenting as dilated veins, usually sublingual, appearing as purple/blue blebs.

What is the treatment for varicosities?

No treatment is necessary unless thrombosed or for aesthetic reasons.

What is caliber-persistent artery and its clinical features?

Caliber-persistent artery is an age-related vascular anomaly characterized by a large-caliber artery in a superficial location, usually asymptomatic.

What is the treatment for caliber-persistent artery?

No treatment is necessary unless mistaken for another lesion.

What is coronoid hyperplasia and its clinical features?

Coronoid hyperplasia is characterized by restricted jaw opening, often bilateral, with unknown etiology.

What is the treatment for coronoid hyperplasia?

Surgical removal and physiotherapy are recommended, with potential for post-surgical regrowth or fibrosis.

What is condylar hyperplasia and its clinical features?

Condylar hyperplasia presents as facial asymmetry, malocclusion, and prognathism, with an unknown etiology.

What is the treatment for condylar hyperplasia?

Surgery (condylectomy/osteotomy) and orthodontics are recommended.

What is condylar hypoplasia and its clinical features?

Condylar hypoplasia is characterized by a small condyle, Class II malocclusion, and facial asymmetry, with various etiologies.

What is the treatment for condylar hypoplasia?

Surgery, grafting, or distraction osteogenesis may be required.

What is bifid condyle and its clinical features?

Bifid condyle presents as a double-headed condyle, often asymptomatic, with unclear etiology.

What is the treatment for bifid condyle?

No treatment is necessary unless symptomatic.

What are exostoses and their clinical features?

Exostoses are bony nodules/protuberances forming from the cortical plate, influenced by genetic and environmental factors.

What is the treatment for exostoses?

Removal is indicated if ulcerated or for prosthesis fit.

What is torus palatinus and its clinical features?

Torus palatinus is a bony midline mass on the hard palate, with multifactorial etiology.

What is the treatment for torus palatinus?

Removal is indicated if ulcerated or for prosthesis fit.

What is torus mandibularis and its clinical features?

Torus mandibularis consists of bilateral bony nodules on the lingual aspect of the mandible, with multifactorial etiology.

What is the treatment for torus mandibularis?

Removal is indicated if ulcerated or for prosthesis fit.

What is Eagle Syndrome and its clinical features?

Eagle Syndrome is characterized by pain when turning the head, swallowing, or opening the mouth, often accompanied by headaches, dizziness, and otalgia.

What is the treatment for Eagle Syndrome?

Treatment depends on severity and may include steroid injection or partial excision.

What is Stafne defect and its clinical features?

Stafne defect is an asymptomatic lucency located at the angle of the mandible, more common in males.

What is the treatment for Stafne defect?

No treatment is necessary.

What are developmental cysts and their types?

Developmental cysts include palatal cysts of the newborn, nasolabial cysts, nasopalatine duct cysts, follicular cysts, dermoid cysts, thyroglossal duct cysts, and branchial cleft cysts.

What are palatal cysts of the newborn and their clinical features?

Palatal cysts of the newborn are prevalent in 55-85% of neonates, presenting as Epstein pearls or Bohn nodules.

What is the treatment for palatal cysts of the newborn?

No treatment is required.

What is a nasolabial cyst and its clinical features?

A nasolabial cyst is a fissural cyst or misplaced nasolacrimal duct epithelium, causing elevation of the nasal region.

What is the treatment for a nasolabial cyst?

Excision is the recommended treatment.

What is a nasopalatine duct cyst and its clinical features?

The nasopalatine duct cyst is the most common non-odontogenic cyst in the oral cavity, presenting as a cyst on the anterior maxilla palate, often appearing heart or pear-shaped on radiographs.

What is the treatment for a nasopalatine duct cyst?

Enucleation is the treatment, with rare recurrence.

What are follicular cysts of the skin?

Follicular cysts (epidermoid, pilar, and sebaceous) are keratin-filled cysts arising from hair follicles in the skin.

What is a dermoid cyst and its clinical features?

A dermoid cyst is a benign cystic form of teratoma, presenting as swelling at the floor of the mouth at midline.

What is a thyroglossal duct cyst and its clinical features?

A thyroglossal duct cyst is a developmental cyst derived from thyroglossal tract remnants, presenting midline from the foramen cecum to the suprasternal notch.

What is a branchial cleft cyst and its treatment?

A branchial cleft cyst originates from epithelial remnants of branchial arches and requires surgical removal.

What are oral lymphoepithelial cysts and their treatment?

Oral lymphoepithelial cysts develop in areas of lymphoid tissues in the mouth and may require excision or monitoring.

What is progressive hemifacial atrophy and its etiology?

Progressive hemifacial atrophy (Parry-Romberg syndrome) is characterized by atrophy on one side of the face, with unknown etiology, trauma, Lyme disease, or scleroderma.

What is the treatment for progressive hemifacial atrophy?

Plastic surgery and orthodontics may be required.

What is segmental odontomaxillary dysplasia and its clinical features?

Segmental odontomaxillary dysplasia is a rare developmental condition characterized by missing maxillary premolars, unilateral enlargement of gingiva and maxillary bone, and hypoplastic primary teeth.

What is the treatment for segmental odontomaxillary dysplasia?

Treatment may involve none or recontouring the bone.

What is Crouzon syndrome and its etiology?

Crouzon syndrome is a craniosynostosis syndrome caused by FGFR2 mutations, often sporadic, characterized by proptosis, midface hypoplasia, and maxillary pseudocleft.

What is Apert syndrome and its clinical features?

Apert syndrome is a craniosynostosis syndrome characterized by syndactyly of the 2nd-4th digits, ocular proptosis, midface hypoplasia, and mouth breathing.

What is mandibulofacial dysostosis (Treacher Collins syndrome) and its etiology?

Mandibulofacial dysostosis is caused by defects of the 1st and 2nd brachial arch structures due to TCOF1 gene mutation, leading to hypoplastic zygomas, coloboma, and hypoplastic mandible.

What is the treatment for mandibulofacial dysostosis?

Surgery may be required if the condition is severe, along with orthodontics.