Objective:To observe and compare the clinical effects of electrosurgical retraction and secondary gingival retraction in fixed prosthodontics.Methods:68 teeth of 36 patients undergoing crown and bridge restoration were randomly distributed into 2 groups.Secondary gingival retraction and electrosurgical retraction were adopted to perform gingival retraction

take impression in sequence and make master cast respectively.Then

the time of gingival retraction and shoulder of preformed teeth

gingival condition and master cast were evaluated after gingival retraction.Results:25 of 33 teeth performed with secondary gingival retraction reached satisfactory level

while 8 teeth were unsatisfactory

with the satisfactory rate of 75.8%.28 of 35 teeth performed with electrosurgical retraction were satisfactory

but 7 teeth were not satisfactory

with the satisfactory rate of 80.0%.Time of gingival retraction by this two methods showed significant statistical difference

while the effects have no statistical difference.Conclusion:Electrosurgical retraction is a relatively good way of gingival retraction and worthy of clinical application because of easy and simple handling

easy exposure of clear dividing line between soft and hard tissue

satisfactory effects of gingival retraction

and quick recovery after surgery.