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Related Experiment Video

Updated: Jun 21, 2026

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities
07:14

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Published on: May 24, 2022

Influence of crown shape on root coverage therapy.

Maria Fernanda Santos Peres1, Erica Del Peloso Ribeiro, Sandro Bittencourt

  • 1Department of Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil.

Journal of Applied Oral Science : Revista FOB
|August 12, 2009
PubMed
Summary

Crown shape does not impact root coverage success using subepithelial connective tissue grafts. This study found no significant differences in outcomes based on tooth morphology for gingival recession treatment.

Related Concept Videos

Crown Ethers02:36

Crown Ethers

Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether molecules take.

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Area of Science:

  • Periodontology
  • Restorative Dentistry

Background:

  • Gingival recession affects numerous patients, leading to aesthetic concerns and potential tooth sensitivity.
  • Root coverage procedures aim to restore lost gum tissue and improve oral health.

Purpose of the Study:

  • To investigate if tooth crown shape influences the success of root coverage procedures.
  • To compare outcomes of subepithelial connective tissue grafting in relation to crown dimensions.

Main Methods:

  • Eighty patients with Miller class I gingival recessions underwent subepithelial connective tissue grafting.
  • Crown dimensions (width/length ratio) categorized teeth into square (Group A) and long/narrow (Group B) shapes.
  • Clinical parameters, including root coverage percentage, were assessed at baseline and 6 months.

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Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities
07:14

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Published on: May 24, 2022

Main Results:

  • Both groups showed significant clinical improvements after 6 months compared to baseline.
  • The mean root coverage was 91.37% for square crowns and 85.49% for long/narrow crowns.
  • No statistically significant differences in root coverage were observed between the two groups.

Conclusions:

  • Tooth crown shape does not appear to be a determining factor in the success of root coverage using subepithelial connective tissue grafts.
  • The subepithelial connective tissue graft technique yields predictable results regardless of tooth morphology.