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Ideal endodontic access in mandibular incisors.
M J Mauger1, R M Waite, J B Alexander
1Department of Endodontics, Wilford Hall USAF Medical Center, Lackland Air Force Base, TX, USA.
Journal of Endodontics
|May 13, 1999
Summary
Achieving straight-line access in mandibular incisors is crucial for effective root canal treatment. This study found ideal access is typically at the incisal edge, shifting incisally with increased incisal edge wear.
Area of Science:
- Endodontics
- Dental Anatomy
Background:
- Straight-line access simplifies locating and cleaning root canals in mandibular incisors.
- Optimal access preparation is key for successful endodontic treatment.
Purpose of the Study:
- To map ideal straight-line access locations in mandibular incisors.
- To assess the relationship between incisal edge wear and the position of the access opening.
Main Methods:
- Radiographic analysis of 279 mandibular incisors in clinical and proximal views.
- Determination of straight-line access by identifying canal midpoints and projecting a line through the crown.
- Classification of teeth based on incisal edge wear.
Main Results:
- Ideal straight-line access was located at the incisal edge in 72.4% of teeth.
- Access was facial to the incisal edge in 27.6% of teeth.
- Increased incisal edge wear correlated with a shift in ideal access position from facial toward the incisal edge.
Conclusions:
- The incisal edge is the primary location for ideal straight-line access in mandibular incisors.
- Incisal edge morphology significantly influences the optimal placement of access openings for endodontic procedures.