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Morphologic study of the maxillary molars. 1. External anatomy
J D Pécora1, J B Woelfel, M D Sousa Neto
1Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo.
Brazilian Dental Journal
|January 1, 1991
Summary
Maxillary molar anatomy, including root curvature and fusion, was analyzed in 744 teeth. First and second molars showed similar root lengths and curvature, with most exhibiting complete root separation.
Area of Science:
- Dentistry
- Oral Anatomy
- Dental Morphology
Background:
- Understanding maxillary molar root anatomy is crucial for endodontic procedures and orthodontic treatments.
- Variations in root morphology can influence treatment outcomes and predictability.
Purpose of the Study:
- To investigate the external anatomy, root curvature, and degree of root fusion in maxillary first, second, and third molars.
- To provide detailed morphological data for clinical applications in dentistry.
Main Methods:
- Analysis of external anatomy, root curvature, and root fusion in 744 maxillary molars.
- Comparative assessment of morphological characteristics across first, second, and third molar teeth.
Main Results:
- Root lengths and curvatures were similar between maxillary first and second molars.
- Lingual roots of first and second molars curved buccally in 54.6% and 52.3% of cases, respectively.
- Complete separation of all three roots was observed in 86.4% of first molars, 75.9% of second molars, and only 18.8% of third molars.
Conclusions:
- Maxillary first and second molars exhibit comparable root morphology and curvature patterns.
- Maxillary third molars demonstrate significantly lower rates of root separation compared to first and second molars.
- These findings offer valuable insights into the anatomical variations of maxillary molars for dental practitioners.