[The influence of heat/pressure polymerization method on the adaptation of complete denture base].
OBJECTIVE
The purpose of this in vitro study is to investigate the mechanical ability and adaptation of complete denture base by the use of thermoformed resin cured with heat/pressure injection method.


METHODS
The flexural strength, the surface hardness and the adaptation of thermoformed resin and SR Ivoclar capsule resin were compared between using the conventional water bath-cured method and heat/pressure injection method. The collected date were analyzed statistically using the two-sample t test at alpha=0.05.


RESULTS
The thermoformed resin cured with heat/pressure injection method has significant difference from that cured with conventional water bath-cured method on flexural strength and surface hardness (P<0.05). The upper partial base had significant difference in the gap distance at point A, B, D and E (P<0.05) between the thermoformed denture base cured with heat/pressure injection method and conventional water bath-cured method.


CONCLUSIONS
These findings indicate that the thermoformed resin cured with heat/pressure injection method has better mechanical abilities and adaptation than that cured with conventional water bath-cured method.
Wang
Yu-hua
YH
Department of Prosthodontics, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China.
Zhang
Jian-zhong
JZ
Pan
Jing
J
D000180:Acrylic Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003819:Denture Bases; D003824:Denture, Complete; D006244:Hardness; D006358:Hot Temperature; D008422:Materials Testing; D058105:Polymerization; D013499:Surface Properties
D000180:Acrylic Resins; D003764:Dental Materials