Key Points
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Familiarisation with the broad spectrum of contemporary materials allowing better-informed decisions to be made
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Discovering the factors that influence choice of alloys for indirect metallic restorations
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Knowing the pitfalls of selecting a cheap alloy for cast post and core construction
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Familiarisation with the different types of all ceramic crown and which ones can be used posteriorly
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An awareness of the many different types of metal copings for ceramo-metal restorations
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Consideration of the use of composite crowns for specific clinical situations
Key Points
Crowns and extra-coronal restorations:
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1
Changing patterns and the need for quality
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2
Materials considerations
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3
Pre-operative assessment
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4
Endodontic considerations
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5
Jaw registration and articulator selection
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6
Aesthetic control
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7
Cores for teeth with vital pulps
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8
Preparations for full veneer crowns
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9
Provisional restorations
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10
Impression materials and technique
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11
Try-in and cementation of crowns
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12
Porcelain veneers
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13
Resin bonded metal restorations
Abstract
Materials selection is the second in the series on crowns and other extra-coronal restorations. Some of us are less than inspired by dental materials science. Nevertheless, many of the things that concern us clinically with crowns and their alternatives are based on material properties. We worry about the strength of the restoration, how well it fits and its aesthetics. We also worry about wear, occlusal control and biocompatibility. Not least of our concerns are dental laboratory charges, which inevitably have to be passed on to the patient.
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References
O'Brien W Evolution of dental casting. In: Valega T, editor. Alternatives to gold alloys in dentistry Conf. Proc. DHEW Pub. No. [NIH]77-1227. Washington DC: U.S. Government Printing Office 1977.
Craig G O'Brien W, Powers J Dental Materials properties and manipulation St Louis: Mosby pp236–250 1983.
Cohen S Kakar A Vaidyanathan T Viswanadhan T Castability optimization of palladium based alloys. J Prosthet Dent 1996; 76: 125–131.
Marzouk M Saleh L Emanuel R Malone W Clinical behaviour of silver-palladium alloy castings: a five year comparative clinical study. J Prosthet Dent 1991; 65: 19–26.
Kansu G Aydin A Evaluation of the biocompatibility of various dental alloys: part II - allergenical potentials. Eur J Prosthodont Rest Dent 1996; 4: 155–161.
Mulders C Darwish M Holze R Corrosion behaviour of dental alloys - an in-vitro study. J Oral Rehabil 1996; 23: 825–831.
Frykholm K Frithiof L Fernström A Moberger G Blohm S Björn E Allergy to copper derived from dental alloys as a possible cause of oral lesions of lichen planus. Acta Dermato-Venereologica 1969; 49: 268–281.
Smart E Macleod R Lawrence C Resolution of lichen planus following removal of amalgam restorations in patients with proven allergy to mercury salts: a pilot study. Br Dent J 1995; 178: 108–112.
Pierce L Goodkind R A status report of the possible risks of base metal alloys and their components. J Prosthet Dent 1989; 62: 234–237.
Northeast SE van NoortR Johnson A Winstanley RB White GE Metal-ceramic bridges from commercial dental laboratories: alloy composition, cost and quality of fit. Br Dent J 1992; 172: 198–204.
Nery S McCabe JF Wassell RW A comparative study of three dental adhesives. J Dent 1994; 23: 55–61.
Weiss P New design parameters: utilising the properties of Ni-Cr super alloys. Dent Clin N Am 1977; 21: 749.
Kelly J Rose T Nonprecious alloys for use in fixed prosthodontics: a literature review. J Prosthet Dent 1983; 49: 363–370.
Equipment. CoDMIa. Report on base metal alloys for crown and bridge applications: benefits and risks. J Am Dent Assoc 1985; 111: 479–483.
Wiltshire W Ferriera M Ligthelm AJ Allergies to dental materials. Quintessence Int 1996; 27: 513–520.
Ida K Togaya T Tsutsumi S Takeuchi M Effect of magnesia investments in the dental casting of pure titanium or titanium alloys. Dent Mater J 1982; 1: 8–21.
Ida K Tani Y Tsutsumi S Clinical application of pure Ti-crowns. Dent Mater J 1985; 4: 191–195.
Andersson M Bergman B Bessing C Ericson G Lundquist P Nilson H Clinical results with titanium crowns fabricated with machine duplication and spark erosion. Acta Odontol Scand 1989; 47: 279–286.
Bergman B Bessing C Ericson G Lundquist P Nilson H Andersson M A two year follow up study of titanium crowns. Acta Odontol Scand 1990; 48: 113–117.
Michalske T Freiman S A molecular interpretation of stress corrosion in silica. Nature 1982; 295: 511–512.
McClean J Hughes T The reinforcement of dental porcelain with ceramic oxides. Br Dent J 1965; 119: 251–267.
Denry I Recent advances in ceramics for dentistry. Crit Rev Oral Biol Med 1996; 7: 134–143.
Jones D Wilson HJ Some properties of dental ceramics. J Oral Rehabil 1975; 2: 379–396.
Anusavice K Zang N Moorhead J Influence of colorants on crystallization and mechanical properties of lithia-based glass ceramics. Dent Mater 1994; 10: 141–146.
Denry I Rosensteil S Flexural strength and fracture toughness of Dicor glass-ceramic after embedment modification. J Dent Res 1993; 72: 572–576.
Geller WK Kwiatkowski SJ The Willi's glass crown: a new solution in the dark and shadowed zone of aesthetic porcelain restorations. Quintessence Dent Tech 1987; 11: 233–242.
Al-Shehri S Mohammed H Wilson C Influence of lamination on the flexural strength of a dental castable glass-ceramic. J Prosthet Dent 1996; 76: 23–28.
Dong J Luthy H Wohlwend A Sharer P Heat-pressed ceramics: technology and strength. Int J Prosthodont 1992; 5: 9–16.
Qualtrough A Piddock V Dental CAD/CAM: A millstone or a milestone? Dent Update 1995; 22: 200–204.
Mormann W Krejci K Computer designed inlays after 5 years in situ: clinical performance and scanning electron microscopic evaluation. Quintessence Int 1992; 23: 109–115.
Sjögren S Bergman M Molin M Bessing C A A clinical examination of ceramic (Cerac) Inlays. Acta Odontol Scand 1992; 50: 171–178.
Isenberg BP Essig ME Leinfelder KF Three year clinical evaluation of CAD/CAM restorations. J Aesthet Dent 1992; 4: 173–176.
Inokoshi S B VM Willems G Lambrechts P Braem M Vanherles G Marginal accuracy of CAD/CAM inlays made with the original and the updated software. J Dent 1992; 20: 171–177.
Thompson J Bayne S Heymann H Mechanical properties of new mica-based machinable glass ceramic of CAD/CAM restorations. J Prosthet Dent 1996; 76: 619–623.
Tinschert J Zwez D Marx R Anusavice KJ Structural reliability of alumina-, feldspar-, leucite-, mica- and zirconia-based ceramics. J Dent 2000; 28: 529–535.
Wagner W Chu T Biaxial flexural strength and indentation toughness of three new dental core ceramics. J Prosthet Dent 1996; 76: 140–141.
Brunton PA Smith P McCord JF Wilson NH F Procera all-ceramic crowns: a new approach to an old problem. Br Dent J 1999; 186: 430–434.
ISO International standard 6872-1984. 1st ed. Dental Ceramic pp1–14 Geneva, Switzerland: International Organisation for Standardization 1984.
Ban S Anusavice KJ Influence of test method on failure stress of brittle dental materials. J Dent Res 1990; 69: 1791–1799.
McClean J Jeansonne E Chiche G Pinault A All ceramic crowns and foil crowns. In: Chiche G, Pinault A, editors. Esthetics of anterior fixed prosthodontics pp97–113 Chicago: Quintessence Publishing Co., Inc 1994.
Brandson SJ King PA The impact fracture resistance of restored endodontically treated anterior teeth. J Dent Res 1992; 72: 1141.
Madani M Chu FC McDonald AV Smales RJ Effects of surface treatments on shear bond strengths between a resin cement and an alumina core. J Prosthet Dent 2000; 83: 644–647.
Blixt M Adamczak E Linden LA Oden A Arvidson K Bonding to densely sintered alumina surfaces: effect of sandblasting and silica coating on shear bond strength of luting cements. Int J Prosthodont 2000; 13: 221–226.
Karlsson S The fit of Procera titanium crowns. Acta Odontol Scand 1993; 51: 129–134.
McClean JW von Fraunhofer J A The estimation of cement film thickness by an in vivo technique. Br Dent J 1971; 131: 107–111.
Christensen GJ Marginal fit of gold inlay castings. J Prosthet Dent 1966; 16: 297–305.
White SN Kipnis V Influence of marginal opening on microleakage of cemented artificial crowns. J Prosthet Dent 1994; 71: 257–264.
Björn AL Björn H Grkovik B Marginal fit of restorations and its relation to periodontal bone level. Odont Rev 1970; 21: 337–346.
147/242. PoCN Morris H F Department of Veterans Affairs Cooperative Studies Project No. 242 Quantitative and qualitative evaluation of cast ceramic, porcelain-shoulder, and cast metal full crown margins. J Prosthet Dent 1992; 67: 198–203.
Holmes RJ Sulik WD Holland GA Bayne SC Marginal fit of castable ceramic crowns. J Prosthet Dent 1992; 67: 594–599.
Castellani D Baccetti T Clauser C Bernadini UD Thermal distortion of different materials in crown construction. J Prosthet Dent 1994; 72: 360–366.
Shearer B Gough MB Setchell DJ Influence of marginal configuration and porcelain addition on the fit of In-Ceram crowns. Biomater 1996; 17: 1891–1895.
Ratledge D Smith B Wilson R The effect of restorative materials on the wear of human enamel. J Prosthet Dent 1994; 72: 194–203.
Monasky G Taylor D Studies on the wear of porcelain, enamel and gold. J Prosthet Dent 1971; 25: 299–306.
Seghi R Rosensteil S Bauer P Abrasion of human enamel by different dental ceramics in vitro. J Dent Res 1991; 70: 221–225.
Krejci I Lutz F Reimer M Wear of CAD/CAM ceramic inlays: restorations, opposing cusps and luting cements. Quintessence Int 1994; 25: 199–207.
Hacker CH Wagner WC Razoog ME An in-vitro investigation of the wear of enamel on porcelain and gold in saliva. J Prosthet Dent 1996; 75: 14–17.
Al-Hiyasatt AS An investigation of the wear of human enamel and dental ceramics [PhD]. University of Glasgow 1997.
Probster L Four year clinical study of glass infiltrated, sintered alumina crowns. J Oral Rehabil 1996; 23: 147–151.
McLaren EA White SN Survival of In-Ceram crowns in a private practice: a prospective clinical trial. J Prosthet Dent 2000; 83: 216–22.
Oden A Andersson M Krystek-Ondracek I Magnusson D Five-year clinical evaluation of Procera AllCeram crowns. J Prosthet Dent 1998; 80: 450–6.
Brecker SC Porcelain baked to gold: a new medium in prosthodontics. J Prosthet Dent 1956; 6: 801–810.
Weinstein M Weinstein A. Ney Company, assignee Fused Porcelain-to-metal teeth. US Patent 3,052,982, September 11. 1962.
Pang I Gilbert J Chai J Lautenschlager E Bonding characteristics of low-fusing porcelain bonded to pure titanium and palladium-copper alloy. J Prosthet Dent 1995; 73: 17–25.
Walter M Reppel PD Boning K Freesmeyer WB Six-year follow-up of titanium and high-gold porcelain-fused-to-metal fixed partial dentures. J Oral Rehabil 1999; 26: 91–96.
Mattmuller A Wassmann J Biffar R Hydrothermal ceramic for porcelain-fused- to-metal crowns: an initial experience report from clinical practice. Quintessence Int 1996; 27: 521–526.
McClean J Sced I The bonded alumina crown. 1. The bonding of platinum to aluminous dental porcelain using tin oxide coatings. Aust Dent J 1976; 21: 119–127.
McClean J Kedge M Hubbard J The bonded alumina crown. 2. Construction using the twin foil technique. Aust Dent J 1976; 21: 262–263.
Philp G Brukl C Compressive strengths of conventional, twin foil, and all-ceramic crowns. J Prosthet Dent 1984; 52: 215–220.
Piddock V Marquis P Wilson H Comparison of the strengths of aluminous porcelain fired onto platinum and palladium foils. J Oral Rehabil 1991; 13: 31–37.
Southan D Defects in porcelain at the porcelain-to-metal interface. In: Yamada H, Grenoble P, editors. Dental porcelain: the state of the art -1977 pp48–49 Los Angeles: University of Southern California 1977.
Hopkins K A method of strengthening aluminous porcelain jacket crowns. Br Dent J 1981; 151: 225–227.
Hummert T Barghi N Berry T Effect of fitting adjustments on compressive strength of a new foil crown system. J Prosthet Dent 1991; 66: 177–180.
Hummert T Barghi N Berry T Postcementation marginal fit of a new ceramic foil crown system. J Prosthet Dent 1992; 68: 766–770.
Shoher I Whiteman A Captek - A new capillary casting technology for ceramometal restorations. Quintessence Dent Tech 1995; 18: 9–20.
Giordano RA Campbell S Pober R Flexural strength of feldspathic porcelain treated with ion exchange, overglaze, and polishing. J Prosthet Dent 1994; 71: 468–472.
Burke F Watts D Wilson N Wilson M Current status and rationale for composite inlays and onlays. Br Dent J 1991; 170: 269–273.
EH40/97. Occupational exposure limits 1997 for use with The Control of Substances Hazardous to Health Regulations 1994 pp14–17 Sudbury: HSE Books 1997.
Seghi R Daher T Caputo A Relative flexural strength of dental restorative ceramics. Dent Mater 1990; 6: 181–184.
Seghi R Sorensen J Relative flexural strength of six new ceramic materials. Int J Prosthodont 1995; 8: 239–246.
Wohlwend A Strub J Scharer P. Metal ceramic and all porcelain restorations: current considerations. Int J Prosthodont 1989; 2: 13–26.
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Wassell, R., Walls, A. & Steele, J. Crowns and extra-coronal restorations: Materials selection. Br Dent J 192, 199–211 (2002). https://doi.org/10.1038/sj.bdj.4801334
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