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This split-mouth randomized clinical trial compared two different types of subepithelial connective tissue grafts (SCTG) considering clinical parameters and patient-centered outcomes in patients with bilateral RT 1 multiple gingival recessions after 6 months postoperatively. 21 patients with 84 sites were surgically treated with coronally advanced flap (CAF) associated with SCTG harvested by: double blade scalpel (DBS) and de-epithelized (DE) SCTG. Periodontal clinical parameters and aesthetics were evaluated by a calibrated periodontist at baseline and after 6 months. Patient-centered outcomes related to pain/discomfort and aesthetics were assessed with Visual Analogue Scale (VAS) after 7 days and 6 months, respectively. Gingival blood flows were analyzed by Laser Doppler flowmetry (FLD) at baseline and 2, 7 and 14 days postoperatively.
Clinical parameters and patient-centered outcomes
Periodontal clinical examination was performed by a blind and calibrated examiner (intra-class correlation coefficient = 0.72) using a North Carolina periodontal probe (PCPUNC-Hu-Friedy®). Periodontal parameters were evaluated at baseline and after 6 months postoperatively and included:
1. Recession depth (RD) - Distance in millimeters of cemento-enamel junction (CEJ) to gingival margin measured at the midbuccal aspect of the tooth;
2. Recession width (RW) - Distance between interproximal gingival margins of GR with periodontal probe positioned at CEJ;
3. Probing depth (PD) - Distance in millimeters from the gingival margin to the bottom of the gingival sulcus;
4. Clinical attachment level (CAL) - Distance in millimeters from the CEJ to the bottom of the gingival sulcus;
5. Keratinized tissue width (KTW) - Distance in millimeters from the gingival margin to the mucogingival junction measured at the midbuccal aspect of the tooth;
6. Keratinized tissue thickness (KTT): determined 1.5 mm apically to gingival margin with an anesthesia needle and a rubber endodontic stop inserted perpendicularly into the soft tissue and measured with a digital caliper.
The index proposed by Zucchelli & DeSanctis (2000) was used to calculate percentage of root coverage (%RC), as follows:
RRC=(100.(RD baseline-RD 6 months))/(RD baseline) Patient centered outcomes and professional assessment were evaluated with visual analog scales (VAS). VAS was administered verbally to the patients to assess aesthetics and postoperative pain/discomfort. Patients were asked to make a mark in a scale between 0 (not satisfied or extreme pain) and 10 (very satisfied or no pain). Pain and discomfort were recorded after 7 days and patient´s aesthetic evaluation after 6 months. An experienced periodontist (intra-class correlation coefficient = 0.95) evaluated aesthetic outcome after 6 months.
The Laser Doppler flowmetry (LDF) technique (VMS-LDF2 DUAL CHANNEL- Laser Doppler Blood Flow and Temperature Monitor (Moor instruments- process number-FAPESP 2012/13331-2) was used to evaluate blood flow on the recipient sites. LDF is equipped with a laser diode that emits in the infrared spectrum range (Maximum power - 2.5mW, wavelenghts 785nm±10nm). Measurements with LDF were performed with two probes for 1 minute and 30 seconds. These measurements were recorded three times for each site with intervals of one minute.
Gingival Recession, Generalized
de-epithelized (DE) SCTG
University of Sao Paulo
Published on BioPortfolio: 2019-09-24T05:27:39-0400
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Generalized or localized diffuse fibrous overgrowth of the gingival tissue, usually transmitted as an autosomal dominant trait, but some cases are idiopathic and others produced by drugs. The enlarged gingiva is pink, firm, and has a leather-like consistency with a minutely pebbled surface and in severe cases the teeth are almost completely covered and the enlargement projects into the oral vestibule. (Dorland, 28th ed)
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Excessive growth of the gingiva either by an increase in the size of the constituent cells (GINGIVAL HYPERTROPHY) or by an increase in their number (GINGIVAL HYPERPLASIA). (From Jablonski's Dictionary of Dentistry, 1992, p574)
Techniques used to expose dental surface below the gingival margin in order to obtain better dental impression during periodental and peri-implant applications. The retraction of the gingival tissue can be achieved surgically (e.g., laser gingivectomy and rotary curettage) or chemically with a retraction cord.
An abnormal extension of a gingival sulcus not accompanied by the apical migration of the epithelial attachment.
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