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 .
Microleakage of sealants after conventional, bur, and air-abrasion preparation of pits and fissures.
PURPOSE The aim of this study was to compare the microleakage of unfilled and filled sealants after conventional , bur , and air-abrasion tooth preparation . METHODS Seventy-two extracted molars were r and omly divided into three groups . In group 1 , 24 teeth were prepared by pumicing and acid etching with 37 % phosphoric acid . In group 2 , 24 teeth were prepared with a 1/4-round bur in a low-speed h and piece and then acid etched . In group 3 , 24 teeth were prepared by high-speed ( 160 PSI ) microabrasion using 50 mu alpha alumina particles in a KCP 2000 machine . In each group , 12 teeth were sealed with a filled sealant and 12 teeth with an unfilled sealant . All the teeth were stored in artificial saliva for 7 days and thermocycled for 2000 cycles . Teeth were then sealed apically and coated with nail varnish 1 mm from the margins and stained in 1 % methylene blue for 24 h. Each tooth was sectioned in three locations and ranked ( 0 - 3 ) for microleakage . RESULTS There were 216 sections and 66 % showed no leakage . CONCLUSIONS Chi-square statistical analysis of the data led to the following conclusions : 1 ) superior results were obtained when the tooth surfaces were prepared by a bur , 2 ) conventionally and KCP 2000-prepared tooth surfaces yielded similar results , and 3 ) the unfilled sealant was superior to the filled sealant
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 .