Dental anomalies of number and forms may occur in the primary and permanent dentition. Various terms have been used to describe dental twinning anomalies: Germination, fusion, concrescence, double teeth, conjoined teeth, twinned teeth, geminifusion, and vicinifusion. Fused tooth is a developmental anomaly that is seen more frequently in the primary than the permanent dentition. Double tooth inv...

objective: resistance to fracture is a critical issue when it comes to tooth restoration. the purpose of this study was to evaluate the fracture resistance of pulpotomized primary molars restored with glass ionomer (gi), amalgam and composite resin with and without cusp reduction.   methods: in this in-vitro experimental study, 60 extracted primary teeth were randomly divided into 6 groups of 1...

abstract : a 28-year old patient was referred for endodontic treatment of his left mandibular second molar. the patient had no history of systemic diseases and his chief complaint was spontaneous pain in left posterior region of mandible. clinically, there was a deep caries in the left mandibular second molar. radiographic examination of this tooth revealed a long crown containing large pulp ch...

background and aims. the majority of failures in class ii amalgam restorations occur in the first primary molar teeth; in addition, use of compomer instead of amalgam for primary molar teeth restorations is a matter of concern. the aim of the present study was to compare the success rate of class ii compomer and amalgam restorations in the first primary molars. materials and methods. a total of...

Radicular cysts are by far the most common cystic lesions of the jaw. However, those arising from primary teeth are comparatively rare, comprising only 0.5 to 3.3%. The aim of this paper is to present clinical, radiographic and histopathological characteristics of radicular cyst associated with a primary mandibular molar causing unusual displacement of the permanent successor. Extraction of pri...

BACKGROUND Molar bonding procedures need continuous improvement to be widely accepted clinically and eventually replace molar bands. MATERIAL AND METHODS The purpose of this study was to determine the effects of enamel micro-abrasion and silane coating of the base of molar tubes on shear and tensile bond strengths of orthodontic molar tubes. A total of 200 third molars were randomly allocated...

OBJECTIVE This study investigated the effect of a re-wetting agent on the microtensile bond strengths (mTBS) of primary and permanent dentin after acid or laser etching. MATERIALS AND METHODS Twelve permanent and 12 primary molar teeth were ground to expose an occlusal dentin surface. Each group teeth were randomly divided into groups; I-II: 37% phosphoric acid etching with/without re-wetting...

introdouction: age estimation is an important issue in forensics, particularly for treatment planning and determining patients’ rights. radiographic evaluation of the third molar developmental stage is a significant criterion for age estimation. the pattern of tooth development is largely heritable and varies from race to race. the objective of this study was to radiographically examine and com...

OBJECTIVES The premature loss of primary teeth is a potential risk factor for poor arch length development. Adequate arch length is important to the progression of the permanent teeth. Poor arch length can lead to crowding, ectopic eruption, or impaction of these teeth. This study is designed to assess the prevalence of premature loss of primary teeth in the 5-10-year-old age group. MATERIALS...