DIAGNOSIS OF INCIPIENT PERIODONTAL DISEASE IN ADOLESCENTS: SEARCH OF ACCURACY.

Background:-Increased distance between the alveolar bone crest and the cementoenamel junction (ABC/CEJ) is indicative of periodontal disease.So, more adequate diagnosis methods are crucial in the detection of this disease.Moreover, softwares may automate this mensuration process and eliminate the influence of the examiner\'s judgment. Objective:- To evaluate the effectiveness of the Digora computerized method to determine distance between alveolar bone crest and cementoenamel junction (ABC/CEJ), comparing this method to the caliper traditional analysis in the early detection of the periodontal disease. Methods:- The sample was comprised of 380 sites (mesial/distal surfaces of molars and premolars) of standardized bitewing radiographs. An experienced examiner measured the ABC/CEJ distances using caliper and4X increase lens (Standard Gold) and a calibrated examiner measured using the Digora program. ABC/CEJ distances longer than 2mm were considered periodontal disease. Positive and negative sites for the disease were selected (25/each), with the same variation based on the cut point. Double-blind mesurations of the ABC/CEJ distances were made by two examiners: one inexperienced and another calibrated, using caliper and Digora program. It was made a comparative analysis of the data gotten by the method of instrument validation. Results: The inexperienced examiner showed inefficiency in both the analysis methods and the calibrated examiner using the Digora system presented more efficiency. Conclusion:- The use of Digora system to detect bone loss in early stages proved as efficient as the caliper.