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Effect of core material stiffness on fracture resistance in Endodontically treated teeth with flared root canals

หน่วยงาน จุฬาลงกรณ์มหาวิทยาลัย

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ชื่อเรื่อง : Effect of core material stiffness on fracture resistance in Endodontically treated teeth with flared root canals
นักวิจัย : Chaiwat Varauboln
คำค้น : Root canal therapy , Dental therapeutics , Dental pulp cavity , Dental materials , Teeth -- Fractures
หน่วยงาน : จุฬาลงกรณ์มหาวิทยาลัย
ผู้ร่วมงาน : Mansuang Arksornnukit , Chulalongkorn University. Faculty of Dentistry
ปีพิมพ์ : 2554
อ้างอิง : http://cuir.car.chula.ac.th/handle/123456789/28104
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Thesis (M.Sc.)--Chulalongkorn University, 2011

Background and rationale: Different core materials may have an influential effect on the fracture resistance of endodontically treated teeth (ETT) with flared root canals Objective: This study compared the fracture resistance of endodontically treated teeth with flared root canals, restored using core build-up materials with different modulus of elasticity and a quartz fiber post. Material and methods: Thirty two extracted human mandibular premolars were decoronated to obtain 15 mm of root length, endodontically performed and prepared as flared canal with 1 mm of dentin thickness wall to the depth of 7.5 mm into root. All teeth were restored with D.T. Light post #1 and luted with Super-Bond C&B resin cement and then randomly divided into 4 groups (n=8). Four core build-up resin composites: Clearfil Photocore, Multicore Flow, Built-it and Coreflo were used as core foundation. The specimens were embedded in self-cured acrylic resin blocks with a simulated PDL. All specimens were loaded on a universal testing machine with a crosshead speed of 1 mm/min on the buccal surface at an angle of 135๐ to the long axis of the tooth until failure occurred. Results: The fracture resistance of groups 1, 2, 3 and 4 were 864.7 ± 189.8 N, 1519.2 ± 278.9 N, 1110.8 ± 229.8 N, and 901.6 ± 183.6 N, respectively. One-way ANOVA and Tukey HSD post-hoc analysis revealed the fracture resistance of groups 1 was significantly higher than group 2, 3 and 4 (p<0.05). No significant differences were found in groups 2, 3 and groups 4. Conclusion: Within the limitation of this study, Multicore Flow showed better fracture resistance in flared canals with favorable fracture.

บรรณานุกรม :
Chaiwat Varauboln . (2554). Effect of core material stiffness on fracture resistance in Endodontically treated teeth with flared root canals.
    กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย.
Chaiwat Varauboln . 2554. "Effect of core material stiffness on fracture resistance in Endodontically treated teeth with flared root canals".
    กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย.
Chaiwat Varauboln . "Effect of core material stiffness on fracture resistance in Endodontically treated teeth with flared root canals."
    กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย, 2554. Print.
Chaiwat Varauboln . Effect of core material stiffness on fracture resistance in Endodontically treated teeth with flared root canals. กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย; 2554.