Background and Objectives The average orthodontic treatment time for extraction therapy is 31 months. One of the main disadvantages of orthodontic treatment is time. Alveolar corticotomies have been used in conjunction with orthodontics to reduce the treatment time by increasing the rate of tooth movement. Concerns about the possible risks of corticotomy procedure have led to the modification of this technique. Germeç et al. reported a case treated by their modified corticotomy technique and noted reduced treatment time without any adverse effects on the periodontium and the vitality of teeth with their new conservative corticotomy technique. This study was undertaken to clinically evaluate the efficacy of the aforesaid technique. Materials and Methods A split-mouth study design was carried out to compare the rate of maxillary canine movement with and without modified corticotomy facilitated orthodontic treatment in 10 patients requiring maxillary first premolar extractions. The modified corticotomy procedure was performed on the maxillary arch unilaterally. The upper arch was immediately activated bilaterally after surgical procedure using equal orthodontic forces for retraction of the maxillary canines. The amount of tooth movement was recorded at an interval of every month till the completion of canine retraction. The rate of canine movement on experimental and control site was compared. The patients were followed for 6 months to check the occurrence of undesired effects such as root resorption, periodontal damage and loss of vitality of teeth on the experimental side. Results Higher mean velocity was observed in canines with modified corticotomy facilitated retraction compared to conventionally retracted canines; with the difference in mean velocity between the two groups was found to be clinically significant as well as statistically significant (P < 0.001). Interpretation and Conclusion The results suggested that modified corticotomy technique serves as an effective and safe way to accelerate orthodontic tooth movement, without adversely affecting the periodontium, root resorption, and the vitality of the teeth, as concluded by clinical and radiographic examination.
ramus area. Somehow in this case, cyst was extending up to roots of first and second molars. Therefore, this case presents mandibular cyst with a diagnostic dilemma between a DC and a radicular cyst owing to its radiological and clinical presentation. CASE REPORTA 17-year-old female patient reported to the Department of Oral and Maxillofacial Surgery, YMT Dental College and Hospital, Navi Mumbai, Maharashtra, India, with the chief complaint of decayed mandibular first molar. The cystic lesion was found in routine radiographical investigation (Fig. 1). Obvious swelling or facial asymmetry was not noted. Neither sinus nor fistula was evident extraorally. Lymph nodes were nonpalpable, nontender regional. Examination (Fig. 2) showed grossly carious #36. By using electrical pulp testing method, #36 and #37 were found to be nonvital. The involved teeth were not mobile, and pain on percussion was absent. No paresthesia was recorded. Orthopantomogram (OPG) showed a cariously involved #36. Overretained #75 and #85 and congenitally missing #35 and #45 were seen. A large unilocular radiolucency extending from #36, #37 to unerupted 38 was observed with resorption of both the roots of #37. Well-defined, well-corticated borders were seen. Intact inferior border of the mandible was seen (Fig. 1) ABSTRACTDentigerous cyst (DC) is one of the most common odontogenic cysts that develops abnormally around unerupted maxillary or mandibular teeth. It is often asymptomatic. It is incidentally observed on dental radiography with delayed eruption of teeth, could be large, and can cause symptoms related to expansion and impingement on contiguous structures. Pain and swelling may be the major complaints of patients. However, DC rarely causes inflammation or infection. In this study, the case of a surgically managed 17-year-old female, with a suspected DC with a diagnostic dilemma between a radicular cyst and DC arising from left mandibular third molar extending up to roots of second, first molar, and an overretained deciduous second molar teeth is presented.
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