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Flapless Esthetic Crown Lengthening for the Treatment of Excessive Gingival Display

NCT01821157 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2013-04-02

No results posted yet for this study

Summary

The aim of this study is to compare the clinical outcomes of open-flap (OF) and flapless (FL) esthetic crown lengthening (ECL) for the treatment of excessive gingival display (EGD). It was hypothesized that the FL surgery would yield similar clinical results to the OF technique up to 12 months. Methods: A split-mouth randomized controlled trial will be conducted in 28 subjects presenting EGD. Contralateral quadrants will receive ECL using OF or FL techniques. Clinical parameters will be evaluated at baseline, 3, 6 and 12 months post-surgeries. The local levels of receptor activator of NF-КB ligand (RANKL) and osteoprotegerin (OPG) will be assessed by ELISA at baseline and 3 months. Patients' perceptions regarding morbidity and esthetical appearance will be also evaluated. Periodontal tissue dimensions will be obtained by computed tomography at baseline and correlated with the changes in the gingival margin (GM).

Conditions

  • Gingival Overgrowth

Interventions

PROCEDURE

Open-flap

Open-flap(control group; n=28 sides/105 teeth): An internal beveled incision was performed at the buccal aspect of the involved teeth. Afterwards, a sulcular incision was completed to allow gingival tissue removal. A full-thickness mucoperiosteal flap was reflected to remove and remodel bone tissue by means of surgical chisels, as necessary, until a 3mm distance was achieved between the bone crest and the cement-enamel junction (CEJ). The exposed root surfaces were carefully planed with curettes. Interrupted sutures were performed at the papilla to allow GM stabilization in the CEJ position.

PROCEDURE

Flapless

FL (test group; n=28 sides/105 teeth): Internal beveled and sulcular incisions and gingival tissue removal were performed as above described for the control group, replacing the GM in the CEJ position. However, the alveolar bone was removed and remodeled, as necessary, using micro chisels, via incisions, without flap elevation. The root surfaces were also carefully planed via incisions. The required distance of 3mm between the bone crest and the CEJ was checked by inserting a periodontal probe into the incision. Sutures were not performed.

Sponsors & Collaborators

  • University of Guarulhos

    lead OTHER

Principal Investigators

  • Poliana M Duarte, DDS · Guarulhos University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
21 Years
Max Age
35 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-01-31
Primary Completion
2012-07-31
Completion
2012-07-31

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01821157 on ClinicalTrials.gov