Periodontal Surgery Procedures Research Articles

Assessment of a developed pig cadaver model for teaching crown lengthening surgical procedures.

BackgroundInformation regarding using a pig cadaver model for teaching purposes in dentistry is limited, especially for periodontal surgery procedures. The aim of this study was to assess the feasibility and efficacy of teaching crown lengthening surgical procedures using a prepared pig cadaver model.MethodsMandibles of slaughtered pigs with subgingival crown fracture defects on two premolars and two molars on each side were prepared as periodontal surgery teaching cases. A resident group (n = 20) and an instructor group (n = 18) participated in assessing the efficacy of the model by completing questionnaires before and after training sessions. Data was either assessed descriptively or analyzed statistically with Wilcoxon signed-rank test with the significance level at α = 0.05.ResultsResults revealed that all the knowledge points showed statistically significant improvements (p < 0.05) except for the procedure to determine the quantity of bone removal during osteotomy procedures. Most residents rated the efficacy of the model obtained with 9.0 out of 10 scale. The data of effectiveness of the pig cadaver model from the instructor group ranged from 7.4 ± 1.4 to 9.0 ± 1.0.ConclusionResults of this study support feasibility in using prepared pig cadaver models to teach crown lengthening surgical procedures to postgraduates.

The outcome of CO 2 laser root conditioning in periodontal treatment

The purpose of this pilot study was to evaluate periodontal tissue repair after CO 2 laser applications in the treatment of severe periodontal defects. Five patients, three men and two women, age range 37 to 55 years, were enrolled. All of the participants in the study were in good general health and presented with at least one tooth with PD of 6 to 9 mm and bleeding on probing. At baseline, all patients were treated with full mouth SRP, motivation and oral hygiene instructions. Clinical assessment after cause-related therapy showed need for additional periodontal treatment. The periodontal surgery procedures were performed with the adjunctive use of a CO 2 laser in defocused pulsed mode at 4 W, with a frequency of 20 Hz and a duty cycle of 6%. All the patients participating in the study were re-assessed 12 months after surgery. All the teeth that received periodontal surgery in conjunction with laser treatment showed significant improvement in all periodontal parameters registered. This pilot study pointed out that CO 2 laser treatment could induce predictable clinical improvements when used as an adjunctive tool with traditional periodontal surgery. More extensive, long-term and comparative studies are needed to confirm this hypothesis and to better clarify the effect of laser treatment on periodontal wound healing.