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Tooth morphology following root resection procedures in maxillary first molars
Journal of Periodontology
|April 1, 1992
Summary
Maxillary molar root resection, specifically the disto-buccal root, often leaves challenging anatomy. Poor root morphology after this procedure can contraindicate its use, posing risks for periodontal maintenance and restorative dentistry.
Area of Science:
- Dental Anatomy
- Endodontics
- Restorative Dentistry
Background:
- Disto-buccal root resection in maxillary molars creates a unique surgical site.
- Understanding the residual root and furcation morphology is crucial post-resection.
Purpose of the Study:
- To evaluate the morphology of maxillary first molars after disto-buccal root resection.
- To identify anatomical factors that may contraindicate this procedure.
Main Methods:
- Examined 50 extracted maxillary first molars post-disto-buccal root resection.
- Measured key morphological parameters: distal concavity (D), inter-root dimension (d), septum width (s), and pulp floor to root separation distance (p).
Main Results:
- Mean measurements: D=2.47mm, d=3.67mm, s=3.33mm, p=2.70mm.
- 86% of teeth had p ≤ 3mm, indicating limited space for restorative margins.
- Only 6% exhibited favorable topography for periodontal and restorative procedures.
Conclusions:
- Poor root anatomy after disto-buccal root resection can be a contraindication.
- This challenging topography is often only apparent during surgery, limiting pre-operative assessment.