Lectura 7.pdf

After flap incision and dissection tetracycline hy

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After flap incision and dissection, tetracycline hy- drochloride (HCl) solution (125 mg/ml) was applied for 3 minutes with cotton pellets on the recessions. The conditioned root surfaces were rinsed with saline solution for 45 seconds. After saline irrigation, an SCTG was obtained from the palate, between the dis- tal aspect of the canine and the mid-palatal region of the second molar, positioned over the exposed roots andadjacent tissuebedat theleveloftheCEJ, andsu- tured by 5-0 bioabsorbable sutures. After this, the flap was coronally advanced at the level of the CEJ and sutured by 5-0 nylon sutures. In all cases, the SCTG was covered as much as possible by the CAF. Sub- sequently, a non-eugenol periodontal dressing was placed over the surgical sites. The dressing and su- tureswereremovedafter8days.Allpatientswerepre- scribed 0.12% chlorhexidine gluconate and instructed to rinse gently twice a day for 3 weeks. During this pe- riod, they were instructed not to brush teeth in treated areas. Analgesics were prescribed if needed, and all patients were seen every week for 4 weeks and then once a month for 4 months. No adverse effects were observed in the donor or recipient sites. At 6 months post-surgery, all clinical measurements were re- peated. All surgeries were performed by the same investigator (Figs. 1 through 10). Statistical Analysis Statistical analysis of the clinical parameters was carried out to compare the baseline values with the 6-month postoperative values using the paired t test for all patients, for the group of patients with mandib- ular recessions, and for the group of patients with maxillary recessions. Intergroup comparisons were also calculated using the paired t test. A significance level for rejection of the null hypotheses was set at a = 0.01. The analyses were performed using a software package. § The percentage of root coverage was calculated as follows: ([initial RD - final RD]/initial RD) · 100. RESULTS Changes in sulcus depth, percentage of root cover- age, and gain in keratinized gingiva were observed over the course of a 6-month period. The mean RD decreased from 3.84 1.50 mm at baseline to 0.14 0.23 mm at 6 months (Table 3). In 20 (71%) of the 28 sites of multiple gingival recessions, the gingi- val margin was located at the CEJ or coronal to it, whereas in eight sites, the residual recession was < 1.0 mm. At the final examination, mean root cover- age was 96%. CALandPDdecreasedfrom5.29 1.30mm(CAL) and 1.52 0.47 mm (PD) at baseline to 1.52 0.47 mm (CAL) and 1.12 0.43 mm (PD) at 6 months post-surgery. The mean width of KT increased from 1.66 1.09 mm at baseline to 3.82 0.91 mm at 6 months post-surgery (Table 3). Statistically signifi- cant improvements were found for gingival recession, attachmentlevel,PD, andwidthofKTfrombaselineto 6 months ( P < 0.000) (Table 3). For patients with mandibular MRTDs, mean RD de- creased from 3.64 1.13 mm to 0.21 0.25 mm, PD decreased from 1.60 0.65 mm to 1.04 0.30 mm, Table 2.
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  • Fall '19
  • Gingiva, Periodontitis, SCTG

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