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Correlating Lower Facial Height and Maxillary Central Incisor Height to Aid in Anterior Aesthetic Designing between
Aasiya Salaria1, Sunantha Selvaraj, Ramesh Raju
1Department of Prosthodontics and Crown & Bridge, Vinayaka Mission's Sankarachariyar Dental College, Vinayaka Mission's Research Foundation-DU, Salem, Tamil Nadu, India.
Background:
In the absence of pre-extraction records, it is indeed a challenge for the prosthodontist to select artificial teeth for the patient. This study proposes to generate a proportion by correlating lower facial height and maxillary central incisor height that can aid in the anterior aesthetic designing. The resultant formula(s) can be of use in the fields of restorative and prosthetic dentistry.
Materials And Methods:
The present study was carried out in sub-populations of two states of India, GROUP A-Tamil Nadu (n = 100) and GROUP B-Jammu and Kashmir (n = 100). The lower facial height and maxillary right central incisor height of all the subjects were measured. The two quantities between males and females; and between population of two states were analysed using an independent t-test. After deriving a positive correlation, linear regression was performed to generate an equation.
Results:
The difference between mean values of lower facial height of populations in Tamil Nadu and Jammu and Kashmir was not statistically significant (P = 0.315); however, the difference between mean values of maxillary right central incisor of sub-populations in Tamil Nadu and Jammu and Kashmir was statistically significant (P = 0.011). Association of the two quantities assessed using Pearson's criteria was statistically significant (P = 0.000) with a positive r value. An equation for the calculation of upper right central incisor height using the data of lower facial height was formulated.
Conclusion:
The resulting equation can be used to generate a guide for the anterior teeth selection process as well as aid in aesthetic restorations for anterior teeth for the two distinct Indian sub-populations.
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