title: Marginal adaptation of ceramic and composite inlays in minimally invasive mod cavities.
abstract: OBJECTIVE
  This study aims to evaluate the effect of a minimally invasive mesial-occlusal-distal (mod) preparation on the marginal adaptation of ceramic and composite inlays with the aim of saving sound dental substance.
  
  
  METHODS
  Class II mod cavities were prepared in 50 extracted human molars and randomly allocated to five groups (n = 10). In all groups, the mesial-proximal box margins were located in the dentin, 1 mm below the cementoenamel junction (CEJ), while the distal box margins were 1 mm above the CEJ. In groups A and B, conventional standard preparations with a divergent angle of α = 6° were prepared. In groups C, D, and E, minimally invasive standard preparations with a convergent angle of α = 10° were prepared. In groups A and D, composite inlays and, in groups B and C, ceramic inlays were fabricated (chairside economical restoration of esthetic ceramics (CEREC)) and adhesively inserted. In group E, a direct composite filling using the incremental technique was placed. Replicas were taken before and after thermomechanical loading (1,200,000 cycles, 50/5 °C, max. load 49 N). Marginal integrity (tooth-luting composite, luting composite-inlay) was evaluated by scanning electron microscopy (× 200). The percentage of continuous margins in the different locations was compared between and within groups before and after cycling, using ANOVA and Scheffé post hoc test.
  
  
  RESULTS
  After the thermomechanical loading, no significant differences were observed between the different groups with respect to the interface of luting composite-inlay. At the interface of tooth-luting composite for preparations involving the dentin, groups A and B behaved significantly better compared to the control group E, which in turn were not different to groups C and D.
  
  
  CONCLUSIONS
  Composite and ceramic inlays inserted in minimally invasive prepared mod cavities result in margins not different from those of inlays placed in conventional mod preparations. Direct composite filling margins, however, were inferior to those attained by conventional indirect restorations.
  
  
  CONCLUSIONS
  Minimally invasive preparations for mod inlays with undercuts show marginal adaptation equal to that of conventional inlay preparation design.
authors: Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Plattenstrasse 11, CH-8032, Zurich, Switzerland, markus.zaruba@zzm.uzh.ch.
authors: M
authors: M
authors: Zaruba
authors: R
authors: R
authors: Kasper
authors: R
authors: R
authors: Kazama
authors: F J
authors: FJ
authors: Wegehaupt
authors: A
authors: A
authors: Ender
authors: T
authors: T
authors: Attin
authors: A
authors: A
authors: Mehl
mesh_terms: D002516:Ceramics; D003188:Composite Resins; D003731:Dental Caries / Q000473:pathology*; D003738:Dental Cements; D006801:Humans; D008855:Microscopy, Electron, Scanning
chemical_list: D003188:Composite Resins; D003738:Dental Cements
references: Oper Dent. 2009 Nov-Dec;34(6):725-31
references: 19953783
references: J Mater Sci Mater Med. 2004 Oct;15(10):1097-103
references: 15516870
references: J Prosthet Dent. 2000 Nov;84(5):506-13
references: 11105006
references: J Am Dent Assoc. 1990 Feb;120(2):177-81
references: 2299059
references: Dent Mater. 1991 Apr;7(2):107-13
references: 1936638
references: Am J Dent. 2003 Aug;16(4):275-82
references: 14579884
references: Dent Mater. 2008 Feb;24(2):185-91
references: 17544101
references: J Dent Res. 1987 Nov;66(11):1636-9
references: 10872397
references: Eur J Oral Sci. 1998 Dec;106(6):1033-42
references: 9879916
references: J Dent. 2004 Feb;32(2):109-15
references: 14749082
references: Int J Comput Dent. 2009;12(4):309-25
references: 20108869
references: Int J Comput Dent. 2008;11(3-4):227-40
references: 19216314
references: Biomaterials. 2005 Nov;26(33):6449-59
references: 15949841
references: Schweiz Monatsschr Zahnmed. 1995;105(3):299-305
references: 7716461
references: J Adhes Dent. 2007;9 Suppl 2:269-73
references: 18340985
references: J Dent Res. 1999 Feb;78(2):699-705
references: 10029469
references: Eur J Oral Sci. 1995 Jun;103(3):186-9
references: 7634136
references: Int J Comput Dent. 2006 Oct;9(4):289-98
references: 17343243
references: Schweiz Monatsschr Zahnmed. 1990;100(8):953-60
references: 2399447
references: J Adhes Dent. 2007 Jun;9(3):311-7
references: 17655071
references: J Adhes Dent. 2010 Jun;12(3):189-96
references: 20157661
references: Int J Comput Dent. 2000 Jan;3(1):9-23
references: 11351392
references: SSO Schweiz Monatsschr Zahnheilkd. 1980 May;90(5):455-83
references: 6931401
references: Quintessence Int. 1997 Feb;28(2):135-44
references: 10332368
references: J Dent Res. 1999 Apr;78(4):898-905
references: 10326734
references: Dent Mater. 1991 Jan;7(1):44-9
references: 2015998
references: Clin Oral Investig. 2007 Mar;11(1):35-43
references: 17031673
references: Scanning Microsc. 1989 Mar;3(1):161-74; discussion 174-6
references: 2662395
references: Gen Dent. 1988 May-Jun;36(3):236-7
references: 3215499
references: Quintessence Int. 2009 Oct;40(9):729-37
references: 19862399
references: Quintessence Int. 1993 Sep;24(9):641-58
references: 8272502
references: J Esthet Restor Dent. 2010 Oct;22(5):314-22
references: 21029335
references: J Oral Rehabil. 2002 Mar;29(3):257-62
references: 11896842
references: J Am Dent Assoc. 2006 Sep;137 Suppl:22S-31S
references: 16950934
references: Quintessence Int. 1994 Jun;25(6):403-9
references: 7938428
references: J Dent Res. 1989 Aug;68(8):1234-7
references: 2632610
references: Compend Contin Educ Dent. 2001 Jun;22(6 Suppl):35-41
references: 11913285
references: J Dent Res. 1993 Feb;72(2):490-4
references: 8423246
references: Oper Dent. 1997 Jan-Feb;22(1):21-9
references: 9227124
references: Am J Dent. 2004 Apr;17(2):118-22
references: 15151339
references: J Prosthet Dent. 2002 May;87(5):503-9
references: 12070513
references: Oper Dent. 2004 Sep-Oct;29(5):481-508
references: 15470871
references: J Dent. 2002 Feb-Mar;30(2-3):119-27
references: 12381412
references: J Adhes Dent. 2004 Autumn;6(3):239-45
references: 15536855
references: Quintessence Int. 1993 Apr;24(4):281-91
references: 8362041
references: J Adhes Dent. 2001 Spring;3(1):45-64
references: 11317384
references: Pract Periodontics Aesthet Dent. 1998 Apr;10(3):295-8; quiz 300
references: 9655063
references: Dent Surv. 1947 Apr;23(4):638
references: 20242418
references: Oper Dent. 2001 Jul-Aug;26(4):357-66
references: 11504435
references: J Dent Res. 1989 Nov;68(11):1540-4
references: 2584522
references: Int J Comput Dent. 2006 Apr;9(2):101-11
references: 16955647
references: Int J Prosthodont. 2004 May-Jun;17(3):357-63
references: 15237886
references: J Prosthet Dent. 2005 Dec;94(6):511-9
references: 16316797
references: J Dent Res. 1955 Dec;34(6):849-53
references: 13271655
references: Clin Oral Investig. 2011 Apr;15(2):283-9
references: 20143242
references: J Prosthet Dent. 1990 Dec;64(6):658-64
references: 2079671
references: J Dent. 2001 Feb;29(2):123-30
references: 11239587
references: Quintessence Int. 1986 Oct;17(10):659-64
references: 3466196
references: Pract Periodontics Aesthet Dent. 1991 Jun-Jul;3(4):53-8
references: 1958847
references: J Dent. 1993 Feb;21(1):39-46
references: 8425982
references: Quintessence Int. 2009 Feb;40(2):125-33
references: 19169444
references: Oper Dent. 1996 Jan-Feb;21(1):17-24
references: 8957911
references: Schweiz Monatsschr Zahnmed. 1990;100(10):1164-8
references: 2237350
references: J Conserv Dent. 2010 Oct;13(4):184-94
references: 21217945
references: Oper Dent. 2008 Jan-Feb;33(1):72-8
references: 18335736
references: Int J Periodontics Restorative Dent. 2002 Jun;22(3):241-9
references: 12186346
references: Quintessenz. 1987 Mar;38(3):457-70
references: 3474683
references: J Am Dent Assoc. 1995 Nov;126(11):1523-9
references: 7499649
references: Eur J Oral Sci. 2003 Feb;111(1):73-80
references: 12558811
references: Quintessence Int. 1986 Dec;17(12):777-84
references: 3468527
references: Schweiz Monatsschr Zahnmed. 1990;100(12):1445-9
references: 2277977
references: Int Dent J. 1994 Aug;44(4):349-59
references: 7822061
references: Dent Mater. 1993 Jan;9(1):2-5
references: 8299864
references: Schweiz Monatsschr Zahnmed. 2001;111(1):11-8
references: 11357809
references: Dent Mater. 2006 Aug;22(8):712-34
references: 16574212
references: J Dent Res. 2005 Jul;84(7):663-7
references: 15972598
references: Oper Dent. 2008 Sep-Oct;33(5):484-7
references: 18833853
references: Am J Dent. 2003 Dec;16(6):431-8
references: 15002960
references: J Adhes Dent. 1999 Autumn;1(3):267-84
references: 11725674
references: J Adhes Dent. 1999 Spring;1(1):41-56
references: 11725685
references: J Prosthet Dent. 2001 Jul;86(1):101-6
references: 11491072