RESUMEN
Excessive gingival display (EGD), known as "gummy smile," is a major esthetic hurdle in today's population. The condition occurs due to various etiologies such as skeletal, dentoalveolar, or soft-tissue origin. The treatment modalities range from orthognathic surgery to periodontal plastic procedures. Lip-repositioning surgery (LRS) is a better alternative for the conventional orthognathic surgery and laser-assisted LRS can be a reliable and a less invasive alternative to conventional (scalpel) LRS. The present case describes the successful treatment of a young female exhibiting an EGD caused by hypermobility of the upper lip and was treated with a modified laser-assisted LRS coupled with gingival recontouring. In a study published earlier, a mild recurrence was observed and hence, to overcome the recurrence, a modified technique, by excising a strip of mucosa with an additional 2 mm of tissue along with the muscular attachment rather than scraping, was attempted.
RESUMEN
INTRODUCTION: Three-dimensional obturation of the root canal system is the final objective of root canal therapy. Greater penetration of sealer in root dentine lesser will be the voids at the dentine-sealer interface. Hence, analysis of the dentin/sealer interface allows the determination of a filling technique which could obturate the root canals with least gaps and voids. Therefore, the aim of this study is to compare the depth and percentage of sealer penetration into root dentin using three different root canal sealer placement techniques under confocal laser scanning microscope. MATERIALS AND METHODS: Thirty single-rooted teeth were selected and prepared. Adseal sealer (Meta Biomed, South Korea) was mixed with Rhodamine B dye and applied using lentulo spiral (Dentsply Maillefer, USA) as Group 1, bidirectional spiral (EZ-Fill- EDS, USA) as Group 2, and ultrasonic endodontic tip (Sonofile- Dentsply Tulsa, USA) as Group 3. Canals were then obturated with gutta-percha. The roots were sectioned at the 3 and 6-mm levels from the apical foramen and examined under confocal laser microscope. RESULTS: Maximum mean depth and percentage of sealer penetration were observed for Group 1 and minimum for Group 3. Furthermore, statistical significant differences among Group 1 and Group 3 were found at 6-mm level and among Group 2 and Group 3 were found at 3-mm level (P < 0.05). CONCLUSION: The depth and percentage of sealer penetration of sealer are influenced by the type of placement technique and by the root canal level, with penetration decreasing apically. Lentulo spiral has shown better penetration of sealer than the bidirectional file and ultrasonics.
RESUMEN
INTRODUCTION: Root canal treatment is incomplete without usage of intra canal medicaments. They help in the reduction of bacterial count and its by-products, making canals clean and decreasing postoperative pains. AIM: The aim of this study was to evaluate and compare the antimicrobial activity of triple antibiotic paste, Moxifloxacin, calcium hydroxide and 2% Chlorhexidine (CHX) gel in elimination of Enterococcous faecalis (E. faecalis). MATERIALS AND METHODS: Seventy-five root blocks were obtained from extracted single rooted human teeth. The canal diameter was increased using Gates- Glidden drill up to size 3 and then contaminated with E. faecalis for 21 days. The contaminated samples were then divided into following 5 groups. Group 1: Saline (negative group), Group 2: Calcium hydroxide Ca(OH)2, Group 3: 2% CHX gel, Group 4: Triple Antibiotic Paste (TAP) (50 µg - metronidazole of 400 mg, 50 µg - minocycline of 100 mg, 50 µg - ciprofloxacin of 100 mg) and Group 5: Moxifloxacin (50 µg - moxifloxacin of 400 mg). Dentin debris was obtained at the end of first, 7th, and 10th day using Gates Glidden drill sizes 4 and 5. The bacterial load was assessed by counting the number of Colony Forming Units (CFUs). The data were analyzed with the ANOVA and Post-Hoc tests to assess the differences in antibacterial efficacy between groups (p=<0.001). RESULTS: A 2% CHX gel alone completely inhibited the growth of E. faecalis after one, seven and 10 days. The 2% CHX gel was the most effective medicament against E. faecalis, as it showed significant differences with normal saline, calcium hydroxide, Moxifloxacin or triple antibiotic paste at all time intervals. The triple antibiotic paste group showed a moderate antibacterial effect as its difference with all group was significantly better at all days. Moxifloxacin was more effective than calcium hydroxide on 7th and 10th day. CONCLUSION: Best antimicrobial efficacy was shown by 2% CHX gel. Moxifloxacin was equally efficient compared to triple antibiotic paste against E. faecalis at longer intervals of time.
