Journal of Periodontal and Implant Science
- Volume 27 Issue 3
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- Pages.603-619
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- 1997
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- 2093-2278(pISSN)
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- 2093-2286(eISSN)
A Comparative Study of Initial Healing Process in White Rats after Gingivectomy using $CO_2$ Laser of different watts
($CO_2$ )레이저를 이용한 백서의 치은절제술시 출력에 따른 초기 치유과정의 비교
- Cho, Kyoo-Sung (Dept. of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
- Hong, Sung-Jae (Dept. of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
- Choi, Seong-Ho (Dept. of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
- Chai, Jung-Kiu (Dept. of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
- Kim, Chong-Kwan (Dept. of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration)
- 조규성 (연세대학교 치과대학 치주과학교실, 치주조직 재생 연구소) ;
- 홍성재 (연세대학교 치과대학 치주과학교실, 치주조직 재생 연구소) ;
- 최성호 (연세대학교 치과대학 치주과학교실, 치주조직 재생 연구소) ;
- 채중규 (연세대학교 치과대학 치주과학교실, 치주조직 재생 연구소) ;
- 김종관 (연세대학교 치과대학 치주과학교실, 치주조직 재생 연구소)
- Published : 1997.09.30
Abstract
The use of laser in the treatment of soft tissue minimizes hemorrhage, provides better view of the operating field, and thereby minimizes operating time. Also, there will be far less post-operative swelling, pain and scar formation, and sterilizing effect are shown in some portions of the wound site. All these advantages of laser therapy contribute to its widespread use in the field of medicine and dentistry. Regarding such facts, we used CO2 laser of different watts in gingivectomy for white rats to compare initial healing process. For the control group, the least amount of output in performing gingivectomy(4watts) was offered, and for the experimental group, 6watts was given. Animals were sacrificed on the second, third days, 1 weeks, 2 weeks, and 3 weeks after operation, and their specimens were histologically analyzed. The following results were obtained: 1. Blood clot of small size was observed in both the control and experimental groups after two days, and no more thereafter. 2. In both the control and experimental groups, the inflammation zone size was the greatest after two days, and it decreased gradually to become almost invisble by the second week. The experimental group showed larger size of inflammation zone during second and third days: however, there was no difference after one week. 3. Granulation tissue in both the control and experimental groups showed gradual maturation with time, and by the second week, it was almost replaced by normal connective tissue. By the third week, complete healing pattern was observed. The experimental group showed larger granulation tissue than the control group until the third day, but there was no significant difference after one week. 4. In both the control and experimental groups, gingival epithelialization began on the second day. After one week, regeneration of rete peg and partial formation of junctional epithelium were observed: by the second week, keratinization of oral sulcular epithelium began, and it was completed by the third week.
레이저를 이용한 연조직 수술은 출혈이 없어 시야를 좋게 하고 시술시간이 단축되며, 술후 종창이 최소화 되고, 통증이 감소화 최소화된 반흔 형성, 그리고 레이저가 조사되는 일부 부위의 멸균효과등이 장점이 있어 최근에 의학분야 및 치의학분야에서 많이 사용되는 추세에 있다. 이에 본 연구에서는
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