We present two previously unreported hominin permanent teeth [one right upper second molar (M2), one left lower second molar (m2)] from Lunadong (“dong” 1⁄4 “cave”), Guangxi Zhuang Autonomous Region, China. The teeth are important because: 1) they were found in situ; 2) at least one (M2) can be confidently assigned to modern Homo sapiens, while the other (m2) is likely modern H. sapiens; and 3)...

OBJECTIVE To compare the interproximal soft tissue dimensions adjacent to single implant restorations in the premolar-molar position with those adjacent to the contra-lateral natural teeth. MATERIAL AND METHODS Twenty-five patients with a single-tooth implant in premolar-molar position and healthy contra-lateral teeth were enrolled in this retrospective cross-sectional study. The reason for t...

PURPOSE The purpose of this study was to assess the associations between dental treatment in the early primary dentition and later treatment in the primary and permanent teeth. METHODS Delta Dental Plan of Michigan insurance claims data on 9,886 children who were born in 1990 and were covered by dental insurance from 1990-1998 were used. Risk ratios (RR), screening test measures of sensitivit...

In recent years a strategy of selective, symptom-based intervention of carious primary teeth has been developed amongst some British general dental practitioners. Practice-based studies appear to provide evidence that policies of restoration of symptomless carious primary teeth do not confer any significant benefits above those associated with non-restorative care. However, results from these s...

PURPOSE The purpose of this study was to clarify the influence of changes of occlusal contacts on adjacent tooth displacement during articulation. MATERIALS AND METHODS The amount and direction of displacement of the maxillary left first molar and adjacent teeth were measured using a displacement transducer, Type M-3. Seven subjects were included in this study. On the maxillary left first mol...

If there are more than 32 teeth in the oral cavity, they are called supernumerous teeth. Distomolars are the fourth molar teeth, in the distal position to the wisdom teeth. Though, paramolars are the supernumerous teeth situated beside the molars. Correct diagnosis of supernumerous teeth is not always easy to conduct basing on pantomographic x-ray pictures. Obtained results indicate that unerup...

PURPOSE Although intracoronal radiolucencies in radiographs of unerupted teeth have been reported for several decades, the prevalence of this condition remains unknown. This study determined the prevalence and associated dental conditions of permanent teeth showing pre-eruptive dentin radiolucencies in bite-wing radiographs of school children attending two school dental therapy training centers...

BACKGROUND Considerable variations in the development stage among patients of the same chronological age have led to introduce the concept of the developmental age based on the maturation of different organs such as cervical vertebrae or teeth. OBJECTIVES The purpose of this study was to investigate the correlation between the stages of tooth calcification and the cervical vertebral maturatio...