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Peripheral dentin thickness after root-end cavity preparation.

Rajneesh Roy1, Nicholas Paul Chandler, Jack Lin

  • 1Department of Oral Rehabilitation, University of Otago School of Dentistry, Dunedin, New Zealand.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|January 31, 2008
PubMed
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Preserving 2 mm of dentin around root-end cavities in maxillary incisors and canines is not feasible. This study found that even with significant root resection, the required dentin thickness could not be maintained.

Area of Science:

  • Endodontics
  • Dental Anatomy
  • Restorative Dentistry

Background:

  • Root-end cavity preparation is crucial in endodontic surgery.
  • Maintaining adequate peripheral dentin is essential for structural integrity.
  • Maxillary incisors and canines present unique anatomical challenges.

Purpose of the Study:

  • To assess the feasibility of retaining 2 mm of peripheral dentin.
  • To evaluate this possibility in root-end cavity preparations of maxillary central incisors and canines.

Main Methods:

  • Root canal treatment was performed on 30 maxillary central incisors and 30 canines.
  • A 3 mm root end resection was followed by ultrasonic preparation of conservative root-end cavities.
  • Measurements and photographic analysis were conducted, with further sectioning if 2 mm dentin was not achieved.

Related Experiment Videos

Main Results:

  • No central incisors retained 2 mm of peripheral dentin at the 3 mm resection level.
  • Canine teeth did not achieve 2 mm of remaining dentin even after resection up to 6 mm.

Conclusions:

  • The goal of preserving 2 mm of dentin around root-end cavities in these teeth is unrealistic.
  • Current surgical recommendations for maintaining this thickness may need reevaluation for maxillary incisors and canines.