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RESEARCH PAPER
Width-to-length ratio of maxillary anterior teeth in the diastematic dentition
 
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1
Department of fixed prosthodontics, DDM, Department of Fixed Prosthodontics, Research Laboratory of Occlusodontics and Ceramic Prostheses LR16ES15, Faculty of Dental Medicine, University of Monastir, Monastir, Tunisia, Tunisia
 
2
Department of fixed prosthodontics, Faculty of dental medicine, Monastir, Tunisia
 
 
Submission date: 2022-12-25
 
 
Final revision date: 2023-02-11
 
 
Acceptance date: 2023-03-27
 
 
Publication date: 2023-03-27
 
 
Corresponding author
Yosra Gassara   

Department of fixed prosthodontics, DDM, Department of Fixed Prosthodontics, Research Laboratory of Occlusodontics and Ceramic Prostheses LR16ES15, Faculty of Dental Medicine, University of Monastir, Monastir, Tunisia, Street of genev-Skanes- Monastir, 5000, Monastir, Tunisia
 
 
Prosthodontics 2023;73(1):11-17
 
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ABSTRACT
Background:
Diastema between maxillary anterior teeth may affect the smile, for that reason patients nowadays more and more often request a diastema closure procedure.

Aim of the study:
To investigate the differences in the width-to-length ratio of maxillary anterior teeth in patients with and without diastema.

Material and methods:
The study was conducted on Tunisian individuals (n=109) divided into two groups: the study group with diastema (n=50) and the control group without diastema (n=59). A digital vernier caliper was used to measure the length and width of maxillary anterior teeth on plaster models. The width was measured from mesial and distal contact points of the tooth on a line perpendicular to the long axis. The length measured the longest distance from the cervical margin to the incisal edge on a line parallel to the long axis. SPSS software was used to calculate the width-to-length ratio for each tooth and to analyze the data.

Results:
Statistical analysis showed that there is no significant difference of width to length ratio of maxillary anterior teeth in patients with or without diastema (left canine: P=0.251; left lateral incisor: P=0.916; left central incisor: P=0.097; right central incisor: P=0.711; right lateral incisor: P=0.879; right canine: P=0.788). The level of significance was set at 0.05.

Conclusions:
The width-to-length ratio given in this study may serve as guidelines for treatment planning for the diastema closure procedure.

eISSN:2391-601X
ISSN:0033-1783
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