Moritz A, Schoop U, Goharkhay K, Aoid M, Reichenbach P, Lothaller M A, Wernisch J, Sperr W
Department of Conservative Dentistry, School of Dentistry, University of Vienna, Austria.
J Clin Laser Med Surg. 1998 Aug;16(4):211-5. doi: 10.1089/clm.1998.16.211.
The present in vivo study was performed to examine the long-term effects of combined CO2 laser treatment and fluoridation on hypersensitive dental necks.
Attempts have been made to treat dental hypersensitivity by sealing exposed dentinal tubules, primarily using fluoride preparations, strontium chloride, and hydroxyapatite. However, these treatment methods have the disadvantage that the preparation is effective only for a limited period of time and must be applied repeatedly, at short intervals. The CO2 laser has been shown to have an excellent sealing effect on hypersensitive dentinal surfaces.
Test subjects suffering from dentinal hypersensitivity were recruited from the patients of the Department of Conservative Dentistry, School of Dentistry of the University of Vienna, Austria and treated with combined laser irradiation and fluoridation with stannous fluoride gel. The patients were followed up for a period of 18 months. In vivo examinations were supplemented by atomic absorption spectroscopy (AAS) of tiny dentin samples obtained from the dental necks 6 weeks and 18 months after laser treatment and by scanning electron microscopy (SEM).
Compared to conventional fluoridation, combined laser irradiation and fluoridation was shown to be effective in the treatment of hypersensitive dental necks. When success was defined as complete freedom from pain, the success rate in the laser group was 96.5%. Furthermore, examinations of irradiated teeth under the scanning electron microscope still revealed complete closure of the dentinal tubules four and six months after laser treatment. AAS showed that tin was present in the samples, which indicates that combined laser treatment and fluoridation result in permanent integration of fluoride in the dentin surface.
Based on these results, the CO2 laser can be recommended as an ideal tool for desensitization of dental necks.
进行本体内研究以检验二氧化碳激光联合氟化治疗对牙齿敏感颈部的长期影响。
已尝试通过封闭暴露的牙本质小管来治疗牙齿过敏，主要使用氟化物制剂、氯化锶和羟基磷灰石。然而，这些治疗方法的缺点是制剂仅在有限时间内有效，且必须短时间间隔重复应用。二氧化碳激光已被证明对过敏牙本质表面具有出色的封闭效果。
从奥地利维也纳大学牙科学院保守牙科患者中招募患有牙本质过敏的受试者，并用激光照射联合氟化亚锡凝胶进行治疗。对患者进行了18个月的随访。体内检查通过对激光治疗后6周和18个月从牙齿颈部获取的微小牙本质样本进行原子吸收光谱分析（AAS）以及扫描电子显微镜（SEM）进行补充。
与传统氟化相比，激光照射联合氟化被证明对牙齿敏感颈部的治疗有效。当成功定义为完全无痛时，激光组的成功率为96.5%。此外，在扫描电子显微镜下对照射牙齿的检查在激光治疗后四个月和六个月仍显示牙本质小管完全封闭。原子吸收光谱分析表明样本中存在锡，这表明激光治疗联合氟化导致氟在牙本质表面永久整合。
基于这些结果，二氧化碳激光可被推荐为牙齿颈部脱敏的理想工具。
