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 .
Pit and fissure sealants in high-caries-risk individuals.
This paper examines the evidence demonstrating the effectiveness of sealants in high-caries-risk children and discusses the Research Triangle Institute/University of North Carolina 's ( RTI/UNC ) systematic review . The strict RTI/UNC protocol limited the number of sealant studies that could be included . This analysis exp and ed their criteria to permit additional methods of determining caries risk ( for example , past caries experience , less than two pairs of sound first permanent molars available/child in half-mouth design s ) and outcome measures in addition to DMFS ( that is , percent sealant retention , survival rates , cost-effectiveness , changes in salivary S. mutans levels ) . Nine clinical studies with a r and omized , half-mouth , clinical trial design and seven studies with observational study design s were included . There is good evidence that  sealants can be used efficaciously and effectively in high-risk  children as long as the sealant is retained . Sealants are more effective in preventing further caries and providing cost savings in a shorter time span if placed in children who have high rather than low caries risk
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 .