Glass-Ceramic Inserts Anticipated for ‘Megafilled’ Composite Restortions Research Moves into the Office

Bowen, R.L.; Eichmiller, Frederick C.; Marjenhoff, William A.

doi:10.14219/jada.archive.1991.0122

Cited by 27 publications

(11 citation statements)

References 5 publications

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“…An alternative to conventional composites has been developed (Bowen et al, 1991). "Megafilled" composite restorations are produced by filling the bulk of the cavity preparation with beta-quartz glass inserts (Lee Pharmaceuticals).…”

Section: (B) Recent Areas Of Studymentioning

confidence: 99%

Current Trends in Dental Composites

Ferracane

1995

Critical Reviews in Oral Biology & Medicine

380

276

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ABSTRACT:The clinical performance of dental composites has been significantly improved over the past decade through modifications in formulation that include: using more stable polymerization promoters for greater color stability; incorporating high concentrations of finely ground fillers to produce adequate strength and excellent wear resistance while retaining translucency; adding radiopacifying agents for improved diagnostics; and utilizing dentin adhesives. However, there are problems which limit the use of composites, especially in posterior teeth. The materials remain very technique-sensitive, due to the extensive contraction which accompanies polymerization and negatively influences marginal sealing. In addition, the materials are generally considered to have inadequate mechanical properties and wear resistance in contact areas to serve as total replacements for amalgams. Current efforts are focusing on several areas, including the development of non-or minimallyshrinking dental composites containing spiro-orthocarbonates as additives to dimethacrylates or epoxy-base resins, and the production of alternative filler materials for ideal wear resistance and esthetics. This paper reviews the composition and characteristics of current dental composites, as well as recent areas of study.

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Section: (B) Recent Areas Of Studymentioning

confidence: 99%

Current Trends in Dental Composites

Ferracane

1995

Critical Reviews in Oral Biology & Medicine

380

276

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“…8,9 Other methods aimed at reducing polymerisation shrinkage have included the use of inserts. [10][11][12][13] Beta-quartz inserts have been shown to reduce polymerisation shrinkage 14 which has resulted in reduced marginal gaps, 15 acceptable margins 16 and less microleakage. 17 Improved occlusal wear rates have also been reported in some studies 18 but not in others 19 and inserts have been considered useful as a means of maintaining a functional occlusion 19 and improved PRACTICE proximal contacts.…”

Section: Introductionmentioning

confidence: 99%

Eight year results with direct ceramic restorations (Cerana)

Millar¹,

Robinson²

2006

Br Dent J

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Background Single-visit system ceramic restorations are now in use to provide an alternative to resin-based materials. Inserts have been shown to improve characteristics of composite restorations. Objective To investigate the longevity of Cerana (Nordiska Dental, Sweden) in a prospective clinical trial. Methods Cerana restorations use matched drills with pre-etched and silanated leucite inserts cemented using a conventional restorative composite resin material. The results of 33 Cerana restorations up to eight years (25 Class I, eight class II) are presented. Restorations were reviewed and assessed by two examiners using modifi ed USPHS criteria for anatomical form (AF) A-C, marginal adaptation (MA) A-D, surface roughness (SR) A-D, marginal discoloration (MD) A-C, colour match (CM) A-C and discomfort (DT) A-D as well as retention. Results The percentage of A scores for AF, MA, SR, MD, CM and DT at baseline (n = 33) were: 100, 100, 79, 100, 21, 100; after two years (n = 27) 100, 85, 33, 100, 19, 100 and after four years (n = 24) 96, 75, 17, 96, 25, 100. At six years (n = 20) 95, 70, 10, 95, 15, 100 and fi nally at the eight year recall (n = 18) 94, 61, 0, 94, 6, 100. AF was maintained in all except for one fractured marginal ridge. MA of the insert was good but composite was lost where exposed. SR increased to a B score for all inserts. MD at B grade was observed in 6% between composite and tooth but none between insert and composite. CM was stable in all cases. DT nil in all. There were no scores less than B. All reviewed restorations were retained, clinically acceptable and in function except for two lost for reasons not directly related to the Cerana insert. One class II restoration had a fractured marginal ridge but otherwise remains satisfactory. Conclusions The results suggest that these restorations can be expected to perform well. Cerana is acceptable in terms of aesthetics, patient acceptance, occlusal wear and ease of use and is a good alternative for a single-visit, tooth coloured restoration in suitable cavity shapes.

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“…This problem has been addressed by the use of different matrix and attachment systems (Keogh & Bertolotti, 2001). Proposed approaches have included the insertion of small composite cylinders (Doukoudakis, 1996), use of orthodontic separators (Kraus, 1998), withdrawal of the matrix during the last moments of the restoration (Derrick, 2000), use of elastic cords (Chang, 2001) and insertion of small ceramic preforms (Bowen, Eichmiller & Marjenhoff, 1991;el-Badrawy & others, 2003) or a small amount of precured composite (Dunn, 2004).…”

Section: Introductionmentioning

confidence: 99%

Individualized Wedge

González-López

Bolaños-Carmona

Mondelo

2006

Operative Dentistry

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SUMMARYThe preparation of an individualized wedge in the gingival embrasure before cavity preparation using photo-cured resin permits rehabilitation of the interproximal space and the original contact point position. Because the individualized wedge completely fills the embrasure, the adaptation to the gingival and proximal walls of the molar to be restored is perfect, avoiding any overextension of obturation material during insertion. Furthermore, the original position of the contact point is preserved.

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Glass-Ceramic Inserts Anticipated for ‘Megafilled’ Composite Restortions Research Moves into the Office

Cited by 27 publications

References 5 publications

Current Trends in Dental Composites

Current Trends in Dental Composites

Eight year results with direct ceramic restorations (Cerana)

Individualized Wedge

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