Microtensile bonding strength between root canal wall and root canal rehabilitation materials
- VernacularTitle:上前牙薄弱根管重塑材料对根管内壁的粘结强度实验研究
- Author:
Xin WU
;
Yaming CHEN
- Publication Type:Journal Article
- Keywords:
Dental pulp cauity;
Post and core technique;
Adhesive strength
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To test the microtensile bonding strength between root canal wall and Bis-Core, and that between root canal wall and Chemil Superior glass-ionomer.Methods:10 human maxillary incisors extracted within one week were kept for another one week after root canal treatment and removeal of the crowns,each root was splited into two parts along with the long axis by Isomet saw, the bonding interface on one third of upside of root dentin smear layer was made with Diamond bur at a high-speed. Then Bis-Core and Chemil Superior glass-ionomer were put on root canal inner surface of each half part of the root respectively, samples with the size of 1.00 mm?1.00 mm were prepared by Isomet saw. Two samples in which bonding interface was perpendiculur to load were selected and fixed in Microtensile testing machine for bonding strength test. Results:Microtensile bonding strength(MPa) between Bis-Core and root canal inner wall and that between root canal inner wall and Chemil Superior glass-ionomer was 20.65?1.72 and 12.89?1.63 respectively(P
