DEEP BITE: FREQUENCY AND PATTERN

Abstract Deep bite is an abnormally increased vertical overlap of upper and lower incisal teeth in centric occlusion, with or without palatal tissue trauma. The purpose of current study was to find out the frequency and pattern of deep bite among the patients visiting department of Orthodontics, Faisalabad medical university and de,Montmorency College of dentistry. Orthodontic plaster model and lateral cephalograms records of 200 subjects were included as per selection criteria. The data were statistically analyzed by SPSS (19.0). Duration of study was from 2016 November to October 2017. The mean age of the sample was 18.32ñ3.44 years. The frequency of deep bite was found to be 25% with more patients being females.

As far as the distribution of 25% patients in different categories of deep bite, maximum number of patients was having mild to moderate degree of deep bite. It was concluded that female are more affected by deep bite malocclusion and frequency of deep bite malocclusion was find out to be 25%.

Key Words: Deep bite; Over bite.

INTRODUCTION Deep bite can be defined as excessive vertical overlapping between the maxillary and mandibular incisal teeth when teeth are in centric occlusion, with or without associated palatal tissue trauma.1 Deep bite malocclusion is multifactorial, usually caused by interaction of genes related and environment related factors.2-4 Several clinical and cephalometric factors associated with development of deep bite malocclusion are Incisor supra-occlusion, excessive horizontal overlapping of incisors, molar infra-occlusion, increased mandibular ramus height, and short vertical facial type.1 Deep bite has been declared one of the most difficult malocclusion to treat with 100% success and stability thus requires permanent retention.5 Deep bite can be treated in many ways such as anterior bite plane/turbo, intrusion auxiliary arch wires, bite jumping therapy, functional appliance therapy and currently, temporary anchorage devices. 6-13 Deep bite malocclusion got certain clinical implications including abnormal mandibular functions and T.M.J disorders.14,15 Identifying deep bite frequency and pattern in different populations can guide us to find out the resources and manpower needed for certain population/ area. In view of the fact that the frequency of deep bite malocclusion in different population is different; present study was designed to calculate the frequency of deep bite malocclusion and its gender distribution in our local Pakistani population. The...