Efficacy of EKSTRAND criterion applied for students and professors to occlusal caries lesions detection. Efetivity and reproducibility.

• Grant number: 09/09739-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: September 01, 2009
• End date: August 31, 2010
• Field of knowledge: Health Sciences - Dentistry - Pediatric Dentistry
• Principal Investigator: Rita de Cássia Loiola Cordeiro
• Grantee: Chaiene Evelin Zago
• Host Institution: Faculdade de Odontologia (FOAr). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil

Abstract

Objective: To evaluate the performance of visual and radiographic analysis according to EKSTRAND 1997, for occlusal caries detection by professors and under graduate dentistry students.Methods: Permanent human pre-molars and molars (n=120) with occlusal surfaces varying from sound to different degrees of non-cavitated and cavitated caries lesions will be selected. These teeth will have its occlusal surface photographed (6.25x) were the sites will be selected and studied. Standardized bitewing radiographs will be taken using Ektaspeed Plus Film (#1) and RX device Gnatus XR6010 (60kvp/10mA/0.5seg). The films will be processed in a automatic machine and mounted in specials holders. Four professors and four dental students will analyze all samples twice with one-week interval, giving clinical and radiographic scores according to EKSTRAND 1997.The Gold Standard will be given by histological analysis observation under a light microscope and lesions will be classified in a 5-point scale according to Ekstrand et al. (1997). For occlusal caries detection, the reproducibility intra and inter-examiner and the effectiveness of visual and radiographic examination will be obtained.