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 .
Influence of erbium, chromium-doped: Yttrium scandium-gallium-garnet laser etching and traditional etching systems on depth of resin penetration in enamel: A confocal laser scanning electron microscope study
Objective : This study was performed to assess the resin tag length penetration in enamel surface after bonding of brackets to identify which system was most efficient . Methodology : Our study was based on a more robust confocal microscopy for visualizing the resin tags in enamel . Totally , 100 extracted human first and second premolars have been selected for this study and were r and omly divided into ten groups of 10 teeth each . In Group 1 , the buccal enamel surface was etched with 37 % phosphoric acid ( 3 M ESPE ) , Group 2 with 37 % phosphoric ( Ultradent ) . In Groups 5 , 6 , and 7 , erbium , chromium-doped : Yttrium sc and ium-gallium-garnet ( Er , Cr : YSGG ) laser ( Biolase ) was used for etching the using following specifications : Group 5 ( 1.5 W/20 Hz , 15 s ) , Group 6 ( 2 W/10 Hz , 15 s ) , and Group 7 ( 2 W/20 Hz , 15 s ) . In Groups 8 , 9 , and 10 , Er , Cr : YSGG laser ( Biolase ) using same specifications and additional to this step , conventional etching on the buccal enamel surface was etched with 37 % ( 3 M ESPE ) after laser etching . In Groups 1 , 5 , 6 , 7 , 8 , 9 , and 10 3 M Unitek Transbond XT primer was mixed with Rhodamine B dye ( Sigma-Aldrich , Germany ) to etched surface and then cured for 20 s. In Group 2 , Ultradents bonding agent was mixed with Rhodamine B. In Group 3 , 3 M Unitek Transbond PLUS , Monrovia , USA , which was mixed with Rhodamine B dye ( Sigma-Aldrich , Germany ) . Group 4 , with self-etching primer ( Ultradent-Peak SE , USA ) was mixed with Rhodamine B dye ( Sigma-Aldrich , Germany ) . Later ( 3 M Unitek , Transbond XT , Monrovia USA ) [ Figure 1 ] was used to bond the modified Begg brackets ( T. P. Orthodontics ) in Groups 1 , 3 , 5 , 6 , 7 , 8 , 9 , and 10 . In Groups 2 , 4 Ultradent-Peak LC Bond was used to bond the modified brackets . After curing brackets were debonded , and enamel depth penetration was assessed using confocal laser scanning microscope . Results : Group J had a mean maximum depth of penetration of 100.876 μm , and Group D was the least having a maximum value of 44.254 μm . Conclusions : Laser alone groups had comparable depths of penetration to that of self-etching groups but much lower than conventional acid etched groups
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 .