쐐기형 5급 와동과 근관와동을 복합레진으로 수복한 상악 소구치에 대한 응력 분석: 3차원 유한요소법적 연구
STRESS ANALYSIS OF MAXILLARY PREMOLARS WITH COMPOSITE RESIN RESTORATION OF NOTCH-SHAPED CLASSⅤCAVITY AND ACCESS CAVITY ; THREE-DIMENSIONAL FINITE ELEMENT STUDY
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초록
The purpose of this study was to investigate the distribution of tensile stress of canal obturated maxillary second premolar with access cavity and notch-shaped class V cavity restored with composite resin using a 3D finite element analysis. The tested groups were classified as 8 situations by only access cavity or access cavity with notch-shaped class Ⅴ cavity (S or N), loading condition (L1 or L2), and with or without glass ionomer cement base (R1 or R2). A static load of 500 N was applied at buccal and palatal cusps. Notch-shaped cavity and access cavity were filled microhybrid composite resin (Z100) with or without GIC base (Fuji Ⅱ LC). The tensile stresses presented in the buccal cervical area, palatal cervical area and occlusal surface were analyzed using ANSYS. Tensile stress distributions were similar regardless of base. When the load was applied on the buccal cusp, excessive high tensile stress was concentrated around the loading point and along the central groove of occlusal surface. The tensile stress values of the tooth with class Ⅴ cavity were slightly higher than that of the tooth without class V cavity. When the load was applied the palatal cusp, excessive high tensile stress was concentrated around the loading point and along the central groove of occlusal surface. The tensile stress values of the tooth without class Ⅴ cavity were slightly higher than that of the tooth with class V cavity.
Abstract
The purpose of this study was to investigate the distribution of tensile stress of canal obturated maxillary second premolar with access cavity and notch-shaped class V cavity restored with composite resin using a 3D finite element analysis. The tested groups were classified as 8 situations by only access cavity or access cavity with notch-shaped class Ⅴ cavity (S or N), loading condition (L1 or L2), and with or without glass ionomer cement base (R1 or R2). A static load of 500 N was applied at buccal and palatal cusps. Notch-shaped cavity and access cavity were filled microhybrid composite resin (Z100) with or without GIC base (Fuji Ⅱ LC). The tensile stresses presented in the buccal cervical area, palatal cervical area and occlusal surface were analyzed using ANSYS. Tensile stress distributions were similar regardless of base. When the load was applied on the buccal cusp, excessive high tensile stress was concentrated around the loading point and along the central groove of occlusal surface. The tensile stress values of the tooth with class Ⅴ cavity were slightly higher than that of the tooth without class V cavity. When the load was applied the palatal cusp, excessive high tensile stress was concentrated around the loading point and along the central groove of occlusal surface. The tensile stress values of the tooth without class Ⅴ cavity were slightly higher than that of the tooth with class V cavity.
참고문헌 (34)
- Reeh ES, "Reduction in tooth stiffness as a result of endodontic and restorative procedures", J Endod, 15, pp.512~516 (1989)
- Helfer AR, "Determination of the moisture content of vital and pulpless teeth", Oral Surg Oral Med Oral Pathol, 34, pp.661~670 (1972)
- Panitvisai P, "Cuspal deflection in molars in relation to endodontic and restorative procedures", J Endod, 21, pp.57~61 (1995)
- Lewinstein I, "Root dentin hardness of endodontically treated teeth", J Endod, 7, pp.421~422 (1981)
- Fusayama T, "Effect of pulpectomy on dentin hardness", J Dent Res, 48, pp.452~460 (1969)
- Pilo R, "Effect of core stiffness on the in vitro fracture of crowned, endodontically treated teeth", J Prosthet Dent, 88, pp.302~306 (2002)
- Gwinnett AJ, "The morphologic relationship between dental resins and etched dentin", J Dent Res, 56, pp.1155~1160 (1977)
- Wolanek GA, "In vitro bacterial penetration of endodontically treated teeth coronally sealed with a dentin bonding agent", J Endod, 27, pp.354~357 (2001)
- Trope M, "Resistance to fracture of restored endodontically treated premolars", Endod Dent Traumatol, 2, pp.35~38 (1986)
- Trope M, "Resistance to fracture of endodontically treated premolars restored with glass ionomer cement or acid etch composite resin", J Endod, 17, pp.257~259 (1991)
- Park JK, "Stress distribution of class V composite resin restorations: A three-dimensional finite element study", J Kor Acad Cons Dent, 33, pp.36~46 (2008)
- Bradley T, "Hancock. Examining the prevalence and characteristics of abfraction like cervical lesions in a population of U.S. veterans", J Am Dent Assoc, 132, pp.1694~1701 (2001)
- Park JK, "The influence of combining composite resins with different elastic modulus on the stress distribution of class V restoration : A threedimensional finite element study", J Kor Acad Cons Dent, 33, pp.184~197 (2008)
- Telles D, "Prevalence of noncarions cervical lesions and their relation to occlusal aspects: a clinical study", J Esthet Dent, 12, pp.10~15 (2000)
- Hansen EK, "In vivo fractures of endodontically treated posterior teeth restored with amalgam", Endod Dent Traumatol, 6, pp.49~55 (1990)
- Morin D, "Cusp reinforcement by the acid-etch technique", J Dent Res, 63, pp.1075~1078 (1984)
- Rees JS, "The effect of cuspal flexure on a buccal Class V restoration: a finite element study", J Dent, 26, pp.361~367 (1998)
- Reeh ES, "Stiffness of endodontically-treated teeth related to restoration technique", J Dent Res, 68, pp.1540~1544 (1989)
- Steele A, "In vitro fracture strength of endodontically treated premolars", J Endod, 25, pp.6~8 (1999)
- Cerutti A, "Effects of bonded composites vs. amalgam on resistance to cuspal deflection for endodontically-treated premolar teeth", Am J Dent, 17, pp.295~300 (2004)
- Litonjua LA, "An assessment of stress analyses in the theory of abfraction", Biomed Mater Eng, 14, pp.311~321 (2004)
- Katona TR, "Stress analysis of a bulkfilled class V light-cured composite restoration", J Dent Res, 73, pp.1470~1477 (1994)
- Geramy A, "Abfraction: 3D analysis by means of the finite element method", Quintessence Int, 34, pp.526~533 (2003)
- Lindehe J, "Textbook of Clinical Periodontology, 2nd edition", pp.19~69 (1989), Munksgaard
- Schroeder HE, "Periodontal Diseases, 2nd edition", pp.3~52 (1990), Lea & Fabiger
- Ichim I, "Mechanical evaluation of cervical glass-ionomer restorations: 3D finite element study", J Dent (2006)
- Yaman SD, "Finite element analysis of strength characteristics of various resin based restorative materials in Class V cavities", J Oral Rehabil, 30, pp.630~641 (2003)
- Oliveira Fde C, "Fracture resistance of endodontically prepared teeth using various restorative materials", J Am Dent Assoc, 115, pp.57~60 (1987)
- Ray HA, "Periapical status of endodontically treated teeth in relation to the technical quality of the root filling and the coronal restoration", Int Endod J, 28, pp.12~18 (1995)
- Hofmann N, "The effect of glass ionomer cement or composite resin bases on restoration cuspal stiffness of endodontically treated premolars in vitro", Clin Oral Investig, 2, pp.77~83 (1998)
- Trope M, "Resistance to fracture of restored endodontically treated premolars", Endod Dent Traumatol, 2, pp.35~38 (1986)
- Gabel, A.B, "American Textbook of Operative Dentistry, 4th edition" (1956), McGraw-Hill
- Reel DC, "Fracture resistance of teeth restored with Class II composite restorations", J Prosthet Dent, 61, pp.177~180 (1989)
- Morin DL, "Biophysical stress analysis of restored teeth: experimental strain measurement", Dent Mater, 4, pp.41~48 (1988)