One study reported that laser preparation as an adjunct to acid-etching enhanced the retention rate .
No significant difference in the incidence of caries was reported .
And no significant differences were found in heart rates , oxygen saturation or degree of the patient dental anxiety between acid-etching and laser preparation .
Conclusion The present limited evidence suggests that lasers could be an effective pretreatment method .
The retention rate was similar to that of conventional acid etching .
Background This systematic review aim ed to assess the clinical effects of laser preparation compared to other types of chemical or mechanical preparation of tooth surfaces used in fissure sealant placement .
Evaluation of the Effects of Enameloplasty and Air Abrasion on Sealant Micro-Leakage
Objective : Micro-leakage , one of the major reasons for recurrent decays , may lead to uncontrollable flow of liquids , pulp inflammation and peri-apical pathology . The purpose of this in vitro study was to evaluate micro-leakage of pit and fissure sealants after using three different pit and fissure preparation techniques : 1 ) acid etching , 2 ) fissure enameloplasty and acid etching , and 3 ) air abrasion and acid etching . Material s and Methods : Sixty-nine extracted sound molars and premolars were r and omly divided into three groups ( 23 sample s in each group ) . Teeth were prepared using one of three occlusal surface treatments . Then the sealant was applied on the occlusal fissures of all teeth . The teeth were thermocycled and stored in normal saline . All teeth were sealed apically and coated with nail varnish and then were immersed in a 2 % solution of methylen blue . Two buccolingual sections were made . The surfaces were scored 0 to 3 for the extent of micro-leakage using a stereomicroscope . Data were analyzed by Kruskal- wallis and Dunn procedure . Results : Enameloplasty and acid etching were significantly different regarding micro-leakage ( P= 0.016 ) , but no significant difference in micro-leakage was observed between air abrasion and the other methods . Conclusion : Enameloplasty followed by acid etching produced significantly less micro-leakage than the acid etching technique . Air abrasion acid etching was better than the acid etching technique in reducing micro-leakage too
One study reported that laser preparation as an adjunct to acid-etching enhanced the retention rate .
No significant difference in the incidence of caries was reported .
And no significant differences were found in heart rates , oxygen saturation or degree of the patient dental anxiety between acid-etching and laser preparation .
Conclusion The present limited evidence suggests that lasers could be an effective pretreatment method .
The retention rate was similar to that of conventional acid etching .
Background This systematic review aim ed to assess the clinical effects of laser preparation compared to other types of chemical or mechanical preparation of tooth surfaces used in fissure sealant placement .