Parveen Akhtar Lone

Abstract

Introduction: Cephalometric analysis for Ortho-Gnathic Surgery (COGS) is the most commonly used analysis for diagnosing and treatment planning of an orthognathic case. This analysis consists of 37 parameters under 7 subheading which covers cranial, skeletal, dental, facial parameters. While performing this analysis it becomes very cumbersome for an oral surgeon and orthodontist to discuss the case with all the parameters in mind. So this study was done to determine the parameters of preference for an Oral surgeon and Orthodontist respectively. Materials and Methods : 20 Oral surgeons and Orthodontist with 2 years of experience were selected for this study. The selection was done randomly by selecting the specialist through online list. A preferential form consisting of all the parameters of COGS analysis with three preference for each parameter-1): Important, 2): Slightly important and 3): Not so important, were distributed to both the specialists. The forms were collected and the data was tested statistically. Results: Percentage wise preference was determined for various parameters. Majority of Oral and maxillofacial surgeons marked skeletal parameter as important while Orthodontist marked soft tissue as important. There was mutual agreement of preference in various parameters: Anterior cranial base (Ptm-N), Lower anterior face height (Ans-Gn), Upper posterior face height (PNS-N) which was statistically significant. Linear, angular, ratio measurement were preferred differently by oral surgeons and Orthodontists. Conclusion: Skeletal measurements were preferred by oral surgeons followed by soft tissue & dental relationship, while as Orthodontists preferred Soft tissue, dental measurements followed by skeletal parameters.Cranial base measurements were not so marked as Ist preference by both the specialists.   Keywords: COGS, Cephalometry

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Abstract

Aims and Objectives: The aim and objective is to evaluate the frequency of third molar impactions, their angulations, and percentage of agenesis in mandible within the demographic confines of Jammu region of Jammu. The pattern of third molar impactions shows variation with respect to different population. Besides, impacted third molars engender potential pathologic complications. Materials and Methods: The sample consists of 310 orthopantomogram from patients who reported to the department of oral and maxillofacial surgery IGGDC Jammu throughout a period of one year. Data regarding age, gender, prevalence and pattern of third molars were collected and analysed. Results: Among 310 patients, 183 were male and 127 were female. The percentage of impactions was higher in case of females than males. Moreover, females had a marginally higher rate of agenesis than males. Mandibular impactions had a higher percentage than maxillary impactions. Mesioangular was the most prevalent angulation. Percentage of vertical impactions in maxilla exceeded that in mandible. Keywords: Third molar, Agenesis, Impaction, Orthopantomogram, Mesioangular.

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