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ePaper created 2017-01-04, 09:21:41 | version 1.38.0
| case report 16 laser 4 2016 A variety of photo coagulation techniques Haemostasis in oral soft tissue and extraction socket Authors: Chaivasan Malakam, Nuttakarn Rungrojwittaya, Nattaya Sanposh & Sajee Sattayut, Thailand Introduction There is a variety of surgical procedures, such as softtissuebiopsyandsurgicalextraction,whichusu- ally results in difficulties for haemostasis. One of the majorconcernsinoralsurgeryistominimisebleeding and postoperative complications. Currently, a num- ber of laser wavelengths have been used in oral sur- gery and dentistry, including CO2 laser, Nd:YAG laser, argon laser, diode lasers in various wavelengths, Er:YAG laser and potassium titanyl phosphate (KTP) laser. Their applications were soft tissue procedures, such as gingivectomy and gingivoplasty, excision of tumors and lesion, incisional and excisional biopsies, frenectomy, control of bleeding in vascular lesions, arthroscopictemporomandibularjointsurgery,caries diagnosis and removal.1, 2 Thephotothermalreaction,whichdependedonthe tissue absorption of the laser energy, played an im- portant part in the laser-surgery procedure with he- mostasis.3 This reaction was mainly applied in soft tissue surgery comprising 1) photoablation, 2) pho- tovaporisation, and 3) photocoagulation. Each reac- tionoracombinationofreactionsoccurredwithvar- ied laser parameters and procedures. Regardingtheprocedurewithpurephotocoagula- tion, there have been various techniques of laser ap- plication4, 5 or light-emitting diodes in dental prac- Fig. 1: Left lateral border of the tongue with 6 mm and 2 mm in diameter of leukoplakia in the tongue. Fig. 2: Buccal mucosa with a 7-mm diameter and whitish moderate-thickening lesion. Fig. 3: Post-CO2 excision of the lesion was completed with no active bleeding. Fig. 4: Intra-operation of CO2 excisional biopsy (photoablation). Fig. 2 Fig. 4 Fig. 1 Fig. 3 42016