ABSTRACT
Background: Today’s community is becoming more concern with the aesthetics and therefore orthodontics is coming into focus. With increasing numbers of patients receiving orthodontic treatment and with increased expectations, the adverse consequences of treatment should be emphasized. External apical root resorption is an iatrogenic consequence of orthodontic treatment, although it can also occur in the absence of orthodontic treatment. Thus every dental practitioner and orthodontist should know the risk factors of root resorption, so that he or she can do everything to reduce the occurrence of root resorption. Methodology: The study was consisted of 50 participants including of general dental practitioners and orthodontists. Study was carried out with the help of specially designed 12 questionnaires, which were validated by doing pilot study. Results: In the present study, 88% participants had knowledge about the fact of orthodontic root resorption and about 31% had come across such situations in their practice. Many of the participants were not having the knowledge of the etiological and other factors associated with the condition. Conclusion: Results of the present study were shown that, though root resorption induced by the orthodontic treatment is commonly seen among the community, many of them were not aware of the sufficient knowledge, attitude and practice towards this adverse situation.
ABSTRACT
Background: Extraction of all 1st premolars in the orthodontic treatment of Class II div 1 malocclusion has been associated with a decrease in vertical dimension of occlusion thus predisposing the patient to TMJ disorders. Objectives: To evaluate the vertical changes occurring in patients having class II div 1 malocclusion, treated orthodontically with 1st premolar extractions & compare these changes with those occurring in patients treated orthodontically without extractions. Method: Pre-treatment & Post-treatment Lateral Cephalogram radiograph of 11 patients having CL-II div1 malocclusion treated without extraction and 16 patients treated with the extraction of all 1st premolars were analyzed and compared to observe the changes in the anterior facial height. Result: the orthodontic treatment of Cl-II div 1 malocclusion cases treated with a non-extraction approach leads to a statistically significant increase in the anterior facial height due to the downward & backward rotation of the mandible. The cases treated with the extraction of all 1st premolars also show the statically significant increase in the anterior facial height but this increase was less than that observed for the non-extraction group. Conclusion: this study does not support the theory that the first premolar extractions reduce the vertical dimension of occlusion and predispose the extraction patients to TMJ disorders.