[The experimental research of the influence of cervical settling method on marginal accuracy of wax patter].
OBJECTIVE
To study the influence of cervical settling method on marginal accuracy of wax patters.


METHODS
24 wax patterns were made on the standard cast specimens and round capsules of which twelve patters were made with the method of cervical settling (experiment group), twelve patters were made with the method of wax dripping (control group). Marginal accuracy of patterns were measured before sublation, sublation half an hour and twenty-four hours.


RESULTS
The results revealed that marginal accuracy had significant difference between the cervical settling methods and wax dripping methods (P < 0.05). There was significant difference between the cervical settling methods measured after half an hour and twenty-four hours (P < 0.01). There was also significant difference between the wax dripping methods measured after half an hour and twenty-four hours (P < 0.01).


CONCLUSIONS
Wax patterns with the method of cervical settling can improve marginal accuracy of patterns. The marginal accuracy of wax patters are influenced by the existing time.
Ding
Wei-shan
WS
Department of Prosthodontics, College of Stomatology, Shandong University, Jinan 250012, China.
Huang
Ai-ling
AL
Hu
Yi-jun
YJ
Du
Zhao-xia
ZX
Wang
Duo
D
D003735:Dental Casting Technique; D018772:Dental Marginal Adaptation