Pattern of tooth loss in the maxillary arch: a study conducted at Ishrat Ulibad instiute of Oral Health Sciences, Duhs Karachi

The aim of the study is to record the frequency and pattern of missing maxillary teeth in a sample population of Karchi, Pakistan. A total of 4000 patients were screened at Dr. Ishratul-Ibad Institute of Oral Health Sciences, Karachi. Out of the total, 3621 patients were selected for the study, Student's test was used to analyzed the data using SPSS 10. Total missing maxillary teeth were 2197 [60.6%] out of the total molars were 1119 [30.9%], premolars were 537 [14.8%], canine 156 [4.3%] and incisors 385 [10.6%].No significant difference was seen between male and female. The present cross sectional study formulates a base line data to depict the pattern of tooth loss and its frequency in our Pakistani population

Comparison of condylar positions in centric relation and centric occlusion in pre-treatment malocclusion cases

To compare the centric relation-centric occlusion discrepancy in Angle's class II and class III with Angle's class I malocclusion cases in sagittal [antero-posterior] plane as determined by the difference in the overjet. Comparative; cross-sectional study Orthodontic Outpatient Department, Karachi Medical and Dental College, from June 2003- August 2004. Patients were divided into 3 groups according to the Angle's classification. Leaf gauges were employed for muscle deprogramming. Bimanual manipulation technique was used to guide the mandible in to centric relation. Softened red modeling wax was used to obtain the centric bite registration. The study casts were trimmed in centric relation using bite registration. Overjet was recorded in centric relation and centric occlusion by dial caliper on casts. The overjet values for centric relation-centric occlusion discrepancy were highly significant for Angle's class II [pvalue 0.002] and Angle's class III [p-value 0.005] when compared with Angle's class I malocclusion. Centric relation-centric occlusion discrepancy can occur in any dental class regardless of age and gender. However, especial emphasis should be given to Angle's class II and III [with functional shift] cases when evaluating any orthodontic patient

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