introduction: bacterial infection of tooth pulp can progress into periapical diseases. root canal treatment has been established as the best treatment. in cases of failure, nonsurgical retreatment of teeth is preferred to surgical procedure and extraction. materials & methods: in this historical cohort study, 104 permanent teeth with apical lesion were treated during 2002-2008. all teeth showed...

BACKGROUND Knowledge about root canal morphology and its frequent variations can exert considerable influence on the success of endodontic treatment. The aim of this study was to survey the root canal morphology of mandibular first premolar teeth in a Gujarati population by decalcification and clearing technique. METHODS One hundred thirty eight extracted mandibular first premolar teeth were ...

OBJECTIVE To evaluate the dental status of 88 cancer patients before chemotherapy. MATERIAL AND METHODS Eighty-eight patients with cancer in different body locations were studied and compared with a control group. Dental plaque was assessed by means of the Silness and Löe index, dental status with the DMFT index, and periodontal status with the modified CPI index. RESULTS In the oncological...

OBJECTIVES To examine the association between the number of teeth remaining and cognitive decline among Chinese older adults over a 13-year period. DESIGN A large national longitudinal survey of Chinese older adults. SETTING The Chinese Longitudinal Healthy Longevity Survey (CLHLS) (1998-2011). PARTICIPANTS A total of 8,153 eligible participants aged 60+ interviewed in up to six waves. ...