Position of canine in the maxillary and mandibular arches

To determine the position of canine in the maxillary and mandibular arches. Cross-sectional analytical Setting: Orthodontic department, Karachi Medical and Dental College. The study was completed in 6 months. 200 patients were included in our study out of which females were138. The subjects were selected on non-probable, purposive technique. Inclusion criteria was patients not orthodontically treated previously, having symmetric arches of either sex between 14years and 25years having adult dentition. Patients exhibiting incisal or cuspal attrition, fractures of teeth or ectopically erupted teeth, having mixed dentition, with anomalies of tooth size e.g. micro dontia, macrodontia, peg laterals etc. were excluded. Patients with anomalies of tooth number e.g. hyperdontia, hypodontia were also not included in this study. Position of canine in the arch were determined on the scanned image of the occlusal surface of the patients casts. For both maxillary and mandibular arches, with-in the arch group showed significant values. In our study, the second most frequent position of canine in the maxillary arch was labial [15% of the total sample]. In the mandibular arch the second most position of canine was also labial. [30% of the total sample]. In the maxillary arch, 85% of the casts showed canine with-in the arch [P< .001]. In the mandibular arch, 65% of the casts showed canine with-in the arch [P< .001]. In our study we found the canine with-in the arch in significant number in both maxilla and mandible

Sagittal discrepancy in centric Relation and centric occlusion positions in pretreatment orthodontic patients

To compare the centric relation [CR] - centric occlusion [CO] discrepancy in sagittal [antero-posterior] plane as determined by the differences in overjet. Design: Comparative; cross sectional study. Place and Duration: Orthodontic outpatient department, Karachi Medical and Dental College. The study period was 18 months. Subject And Eighty patients were divided into 3 groups according to Angle's classification. Leaf gauges were employed for muscle deprogramming. Bimanual manipulation technique was used to guide the mandible in centric relation. Softened red modeling wax was used to obtain the centric bite registration. The study caste were trimmed in centric relation using bite registration. Overjet was recorded in centric relation and centric occlusion by dial caliper on castes. A statistically p-value