The effects of occlusal loading on the margins of cervical restorations

被引:29
作者
Francisconi, Luciana Favaro [1 ]
Zardin Graeff, Marcia Sirlene [2 ]
Martins, Leandro de Moura [3 ]
Franco, Eduardo Batista [1 ]
Lia Mondelli, Rafael Francisco [1 ]
Silveira Francisconi, Paulo Afonso [1 ]
Pereira, Jose Carlos [1 ]
机构
[1] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, BR-17012901 Bauru, SP, Brazil
[2] Univ Sao Paulo, Bauru Sch Dent, Integrated Res Ctr, BR-17012901 Bauru, SP, Brazil
[3] Univ Sao Paulo, Bauru Sch Dent, Dept Oral Rehabil, BR-17012901 Bauru, SP, Brazil
关键词
Cervical restorations; occlusal loading; marginal adaptation; confocal microscopy; FINITE-ELEMENT; LESION FORMATION; EROSIVE LESIONS; ABFRACTION; PREMOLARS; THERAPY; STRESS; TEETH; WEAR;
D O I
10.14219/jada.archive.2009.0051
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Background. Researchers have proposed the restoration of abfraction lesions, but limited information is available about the effects of occlusal loading on the margins of such restorations. Because abfraction is a well-recognized problem, the authors conducted a study to assess the effects of occlusal loading on the margins of cervical restorations. Methods. The authors prepared 40 wedge-shaped cavities in extracted premolars and restored them with a resin-based composite. They subjected specimens to occlusal loading (150 newtons, 101 cycles) on the buccal cusp, on the central fossa or on the lingual cusp, and they stored 1 the control group, specimens in deionized water. The authors used fluorescein to delimit marginal defects and evaluated the defects by using laser scanning confocal microscopy. Results. Results of chi(2) and Kruskal-Wallis tests (P < .05) showed that specimens subjected to occlusal loading had a higher percentage of marginal gaps (53.3 percent) than did the control specimens (10.0 percent). There were no differences between groups in marginal defect formation or in defect location, length or width. Conclusions. Occlusal loading led to a significant increase in gap formation at the margins of cervical resin-based composite restorations. Clinical Implications. The clinician cannot underestimate the effects of occlusal loading When restoring teeth with cervical wedge-shaped lesions. If occlusal loading is the main factor contributing to lesion formation, the clinician should identify and treat it before placing the restoration or otherwise run the risk that the restorative treatment will fail because of marginal gap formation.
引用
收藏
页码:1275 / 1282
页数:8
相关论文
共 36 条
[1]  
ANDERSON D J, 1956, J Dent Res, V35, P664, DOI 10.1177/00220345560350050201
[2]   A critical review of non-carious cervical (wear) lesions and the role of abfraction, erosion, and abrasion [J].
Bartlett, DW ;
Shah, P .
JOURNAL OF DENTAL RESEARCH, 2006, 85 (04) :306-312
[3]  
Brackett W W, 1990, Quintessence Int, V21, P445
[4]   The response of human premolars to cyclic loading [J].
Catovic, A ;
Kraljevic, K ;
Jerolimov, V ;
Celebic, A ;
Kovacicek, F ;
ValenticPeruzovic, M .
JOURNAL OF ORAL REHABILITATION, 1997, 24 (04) :320-324
[5]  
Ceruti P, 2006, Minerva Stomatol, V55, P43
[6]   Use of fluorescent compounds in assessing bonded resin-based restorations: A literature review [J].
D'Alpino, Paulo H. P. ;
Pereira, Jose C. ;
Svizero, Nadia R. ;
Rueggeberg, Frederick A. ;
Pashley, David H. .
JOURNAL OF DENTISTRY, 2006, 34 (09) :623-634
[7]   Efficacy of composite surface sealers in seating cavosurface marginal gaps [J].
D'Alpino, PH ;
Pereira, JC ;
Rueggeberg, FA ;
Svizero, NR ;
Miyake, K ;
Pashley, DH .
JOURNAL OF DENTISTRY, 2006, 34 (03) :252-259
[8]  
Davidson C L, 1994, Am J Dent, V7, P111
[9]   Two-photon excitation of fluorescence for three-dimensional optical imaging of biological structures [J].
Diaspro, A ;
Robello, M .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 2000, 55 (01) :1-8
[10]   Effect of erosive pH cycling on different restorative materials and on enamel restored with these materials [J].
Francisconi, L. F. ;
Honorio, H. M. ;
Rios, D. ;
Magalhaes, A. C. ;
Machado, M. A. A. M. ;
Buzalaf, M. A. R. .
OPERATIVE DENTISTRY, 2008, 33 (02) :203-208