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Quintessence Publishing: Journals: IJED

 

The International Journal of Esthetic Dentistry

Edited by Alessandro Devigus, DMD

Official publication of the European Academy of Esthetic Dentistry, the Arabian Academy of Esthetic Dentistry, the British Academy of Aesthetic Dentistry, the Hellenic Academy of Esthetic Dentistry, the Scandinavian Academy of Esthetic Dentistry and the South African Academy of Aesthetic Dentistry

ISSN 1862-0612

Publication:

Winter 2016
Volume 11 , Issue 4

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Soft tissue cone beam computed tomography (ST-CBCT) for the planning of esthetic crown lengthening procedures

Luisa Schertel Cassiano, DDS, MSc / Mauricio Barriviera, DDS, MSc, PhD / Sandra Suzuki, DDS / Gustavo Giacomelli Nascimento, DDS, PhD / Alessandro Lourenço Januario, DDS, MSc, PhD / Leandro Augusto Hilgert, DDS, MSc, PhD / Wagner Rodrigues Duarte, DDS, PhD

Pages: 482–493
PMID: 27730219

OBJECTIVE: The aim of this study was to measure the clinical crown, anatomical crown, and amount of gingiva covering the enamel of anterior maxillary teeth with soft tissue cone beam computed tomography (ST-CBCT) and thus propose a protocol for the application of this noninvasive method for the planning of esthetic crown lengthening procedures to prevent undesired root exposure.

MATERIALS AND METHODS: Ten young patients (mean age 22.8 years) requiring esthetic crown lengthening surgeries but not restorative procedures were included in this study. The ST-CBCT images were analyzed with an image editor and analysis software (Pixelmator 3.2), and the clinical crown, anatomical crown, and amount of gingiva covering the enamel were measured.

RESULTS: The mean value of the length of the anatomical crowns of the central incisors, lateral incisors, and canines were 11.06 mm, 9.55 mm, and 9.77 mm, respectively. Thus, the canines were approximately 1.3 mm shorter than the central incisors.

CONCLUSION: It was shown that ST-CBCT is a useful tool to assess the actual length of the anatomical crown and the amount of gingival tissue that needs to be surgically removed in an esthetic crown lengthening procedure to prevent undesired root exposure. Thus, ST-CBCT is a helpful noninvasive procedure for the planning of esthetic crown lengthening surgeries, making it possible to better predict their final outcome.

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