Abstract
Introduction
The investigation of the structural patterns of labial frenum is important to establish the frequency with which variation occur, whether normal or harmful to the function.
Objective
To evaluate the patterns of morphology and insertion of labial frenum of patients attended at the clinical School of Dentistry of the University Center of João Pessoa-PB.
Material and method
It was evaluated 385 patients of both genders that attended the clinic between august 2012 and april 2013. The data was analyzed using SPSS (20.0) software.
Result
The most prevalent morphology was single for both the upper labial frenum (82.6%) and for the lower (100.0%). The insertion most prevalent is the “alveolar mucosa”, both in the upper (75.8%) and the lower (99.0%). There was no difference between males and females for morphology and superior insertion (p= 0.673; p=0.582, respectively), as well as to the lower insertion (p=0.599), and so on for the different skin colors (leucoderma, melanoderma e faioderma) (p=0.343; p=0.269; p=0.134, respectively). There was statistical difference (p=0.011) between the mean age for insertion variants of the upper labial frenum.
Conclusion
The most common morphology for both upper labial frenum and for lower is simple, with a higher number of morphological variants to superiors; while the insertion of the alveolar mucosa is most common for both upper and lower frenum; there is no relationship between the morphology and patterns of insertion regarding gender and skin color, but there is relation between the pattern of insertion of the upper labial frenum and age.
Descriptors:
Labial frenum; anatomy; morphology
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