REVERSE SMILE AND LOSS OF VERTICAL DIMENSION -INDICATIONS FOR TOOTH SUPPORTED FULL MOUTH REHABILITATION.

Abstract

Tooth loss or wear of the teeth is dependent on various factors. Tooth loss and wear have multiple consequences and
require a lot of corrections to restore the teeth condition to normal. The consequence includes loss of vertical
dimension, unesthetic smile or reverse smile, angular cheilitis, pulpal exposure etc.To evaluate the prevalence of
reverse smile and loss of vertical dimension in cases requiring tooth supported full mouth rehabilitation cases (FMR).
It is designed as a retrospective study. A total of 66 patient records who underwent tooth supported FMR treatment
were acquired. It was done analysing records of 86000 patient data who were treated from June 2019- March 2020.
Descriptive statistics were used to analyse the frequency and percentage of loss of vertical dimension (VD) in mm and
presence of reverse smile. Chi square test was used to evaluate the correlation between age and gender with the
presence of reverse smile and loss of VD in mm. SPSS version 20 software was used to perform statistics. Reverse
smile was present in 28.8% of cases requiring tooth supported FMR. 36.4% of the cases had a loss of VD ranging
from 1-5mm. 9.1% of the cases had loss of VD ranging from 5-9mm. 4.5% cases had loss of VD greater than 9mm.
most of the VD loss was seen in the age group groups ranging from 51-60 years. Females showed more amount of
VD loss as compared to males. Reverse smiles were seen mainly in the age group of 50-60 years. Female population
showed a higher percentage of reverse smiles compared to male population. There was no significant correlation
between the age and gender with loss of VD and presence of reverse smile. P values >0.05 suggesting that the relation
was insignificant. Within the limitation of the study it was observed that a higher amount of VD loss and presence of
reverse smile was seen in older age groups especially in female populations. There was no significant correlation
between the age and gender with the presence of reverse smile and loss of VD.