A STUDY ON THE SHOCK-ABSORBING BEHAVIOR OF RESTORATIVE MATERIALS AND INTERMOBILE CONNECTOR USEDIN IMZ IMPLANTS.
- Author:
Su Jeong LEE
1
;
Chang Mo CHUNG
;
Young Chan JEON
Author Information
1. Department of Proshodontics, College of Dentistry, Pusan National University, Korea.
- Publication Type:Original Article
- MeSH:
Alloys;
Ceramics;
Crowns;
Elastic Modulus;
Shock
- From:The Journal of Korean Academy of Prosthodontics
1997;35(1):118-129
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to evaluate the shock absorbing effect of 4 restorative materials and intramobile connector. The damping effect of four restorative materials used to veneer test crown rigidly connected to IMZ implant and subjected to an impact force was measured. These materials included a gold alloy(stabilor G) : a noble metal ceramic alloy(Degudent H) : porcelain(Duceram) : composite resin(Dentacolor). In addition, this study compared damping effect of same restoretive materials after using polyoxymethylene intramobile connector(POM IMC). The result of this study suggest that : *In case of using metal IMC 1. Veneered composite resin(group IV) reduced the impact force by 75%, when compared to an equivalent thickness of porcelain(group III). Group IV reduced the impact force by 87% and 89%, respectively, when compared to Stabilor G(group I) and Degudent H(group II). 2. The impact force recorded was higher for the alloy with the higher elastic modulus.(Stabilor G, group I, Young's modulus 107 Gpa, versus Degudent H, Group II, Young's modulus 95 Gpa) 3. It took the longest time for composite resin veneered group(IV) to reach to peak force when compared group I, II, III. *In case of using POM IMC 4. The mean impact force recorded were reduced by 79%(group I), 78%(group II), 69%(group III), 84%(group IV), respectively, when compared to using metal IMC. 5. The time required to reach the peak force were increased by 78%(group I, II) 87% (group III), 34% (group IV), respectively, when compared to using metal IMC
