DEVELOPMENTAL DISORDERS OF TEETH AND RELATED TISSUEBY DR. Uzair Aftab

ABNORMALITES IN THE NUMBER OF TEETHISOLATED HYPODONTIA OR ANODONTIA Failure in development of one or two teeth MOST COMMENLY MISSING TEETH ARE THIRD MOLAR SECOND PREMOLAR OR MEXILARY SECOND INCISOR ANODONTIA ; TOTAL FAILURE OF

DEVELOPMENT OF A COMPLETE DENTITON

HYPODONTIA OR ANODONIA WITH SYSTEMIC DEFECT

ANHIDROTIC ECTODERMAL DYSPLASIA COMPLETE ABSENCE OF TEETH MOST OF THE DECIDUOUS TEETH FORM , BUT THERE MAY BE FEW OR COMPLETE ABSENCE OF PERMANENT TEETH PROFILE RESEMBLE WITH ELDERLY PERSON IN CASE OF ANODONTIA DUE TO GROSS LOSE OF VERTICAL DIMENTION HYPOTRICOSIS ;SCANTY HAIR SKIN IS SMOOTH SHINY AND DRY DUE TO ABSENCE OF SWEAT GLAND FINGER NAILS ARE DEFECTIVE TO IMPROVE PATIENTS APPEEARANCE AND MASTICATION

OTHER CONDITIONS ASSOCIATED WITH HYPODONTIADOWNS SYNDROMCLEFT PALATEANODONTIA IS RARE

HYPERDONTIAADITIONAL TEETH ARE COMMON MAY BE SUPPERNUMERY TEETH; Simple conical in shape most commonly form in incisor or molar region ,occasionally in the midlineSUPPLEMENTAL TEETH : Resemble with normal teeth . EFFECTS AND TREATMENT Prevent normal tooth eruption should be extrected

SYNDROM ASSOCIATED WITH HYPERDONTIACLEIDOCRANIAL DYSPLASIA Many additional teeth develop but fail to erupt

DISORDERS OF ERUPTIONLOCAL OBSTRUTION; Prevent single tooth eruptionEARLY LOSS OF DECIDIOUS PREDECESSOR; Tend to cause irregularities in eruption

DELAYED ERUPTION ASSOCIATED WITH SKELATAL DISORDERS

CRETINSM RICKETSCLEIDOCRANIAL DYSPLASIAHEREDIATORY GINGIVAL FIBROMATOSIS ;PSEUDOANODONTIACHERUBISM

LOCAL FACTORS AFFECTING ERUPTION OF DECIDUOUS TEETH

AN ERUPTION CYST

ABCENSE OF PREDECESSORS

LOCAL FACTORS AFFECTING ERUPTION OF PERMANENT TEETH

LOSS OF SPACEOVERCRODING ABNORMAL POSITION OF CRYPT SUPERNUMERY AND SUPPLIMENTAL TEETHDISPLACEMENT IN DENTIGEROUS CYST RETENTION OF ADECIDUOUS PREDECESSORPARTIALLY IMPECTED TEETH WITH INFECTION

DEFECTS OF STRUCTUREHYPOPLASIA AND HYPOALCIFICATION

Structural defects of teeth ; such as pitting or discoloration MAIN CLINICAL PROBLUM ; Cosmetic improvement

DEFECTS OF DECIDIOUS TEETH

DECIDUOUS TEETH WITTLED H MOTENAMEL; Due to excessively high fluoride content in water DISCOLORATION OF DECIDUOUS TEETH; Due to abnormal pigments circulating in the blood , Tetracycline may cause per.dis

DEFECTS OF PERMANENT TEETH

TURNER TEETH; Periapical infection of predecessor may cause malformation of a single permanent tooth

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DEFECTS OF STRUCTUREIMPORTANENT CAUSES OF MULTIPLE MALFORMED PERMANENT TEETH GENETIC AMELOGENESIS IMPERFECTA HEREDITORY ENAMEL HYPOPLASIA HEREDITORY ENAMEL HYPOCALCIFICATION HYPOMATURATION DEFECTS

AMELOGENESIS IMPERFECTAHEREDITORY ENAMEL HYPOPLASIA -Matrix formation is defective - Enamel is pitted, grooved or very thin but hard and translucent - In affected males complete failure of enamel formation. - In females enamel is vertically ridged

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2; DENTINOGENESIS IMPERFECTA 3; SHEL TEETH 4; DENTINAL DYSPLASIA 5; REGIONAL ODONTO DYSPLASIA 6 MULTISYSTEM DISORDERS OF DENTAL DEFECTS

INFECTIVE CONGENITAL DYSPLASIAMETABOLIC Childhood infections, Rickets HypoparathyroidismDRUGS Tetracycline pigmentationFLOROSISFETAL ALCOHAL SYNDROM

HEREDITORY ENAMEL HYPOCALCIFICATION ENAMEL FORMATION IS NORMAL BUT CALCIFICATION IS POOR ENAMEL IS WEAK AND OPAQUE OR CHALKY IN APPEARANCE TEETH BECOME STAINED UPPER INCISOR DEVELOP A SHOULDER DUE TO CHIPPING OF THE THIN ,SOFT ENAMEL.

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HYPOMATURATION DEFECTSENAMEL FORMATION IS NORMAL BUT OPAQE ,WHITE TO BROWNISH YELLOW

DENTINOGENESIS IMPERFECTACLINICAL FEATURESEnamel is normal in appearance but uniformly brown or purplish and abnormally translucent Crown of the molar is bulbous and the roots are usually short Enamel tend to chip away from the dentineTREATMENTEarly fitting of complete denture due to short roots

SHELL TEETH THIN SHELL OF DENTINAL TISSUE COVERS THE LARGE PULP CHAMBERLACKING OF NORMAL ODONTOBLAST LAYER IN PULP PULP CONSIST OF COARSE CONNECTIVE TISSUE , INCORPORATE THE DENTINE

DENTINAL DYSPLASIA Dentinal dysplasia,the roots are very short and conical .The pulp chambers are obliterated by multiple nodules of poorly organized dentine containing sheaves of tubules .Teeth can be lost in early age

REGIONAL ODONTODYSPLASIA OR GHOST TEETHThis is localized developmental disorderIt can be recognized at the age of eruption of the deciduous teeth 2-4 years or of the permanent teeth 7-11 years Maxillary teeth are most commonly involvedTeeth are poorly calcified and malformedThe enamel is thin ,grossly hypo plastic and hypomineralised Dentine is thins