Clinical efficacy of veneered zirconium dioxide-based posterior partial fixed dental prostheses: Five-year results

Ariel J. Raigrodski, Alika Yu, Gerard Jules Chiche, J. L. Hochstedler, Lloyd A. Mancl, Shawky E. Mohamed

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Statement of problem: In recent years, zirconium dioxide-based partial fixed dental prostheses (FDP) have been suggested as an alternative treatment to traditional metal ceramic FDPs. However, clinical studies evaluating their longevity and related complications are limited. Purpose: The purpose of this cohort clinical study was to assess the efficacy of zirconium dioxide-based posterior 3-unit FDPs. Material and methods: Twenty 3-unit posterior FDPs (Lava) were placed in 16 participants missing a second premolar or a first molar. All participants met specific inclusion and exclusion criteria and provided informed consent. All teeth were prepared in a standardized manner: occlusal reduction of 1.5 to 2 mm; axial reduction of 1 to 1.5 mm; a 1.0 mm 360-degree rounded shoulder placed 0.5 mm subgingivally on the facial aspect and supragingivally on the lingual aspect on sound tooth structure; and rounded internal line angles. Definitive impressions were made with vinyl polysiloxane impression material. Frameworks were fabricated by using computer-aided design and computer-aided manufacturing (CAD/CAM) technology with a uniform retainer thickness of 0.6 mm and a minimal connector surface area of 9 mm2. Restorations were luted with resin-modified glass ionomer cement (Rely-X Luting). Participants were recalled at 2 weeks, 6 months, and 12 months, and thereafter, annually for up to 60 months. Clinical fracture measurements, marginal discoloration, marginal adaptation, radiographic proximal recurrent caries, and periapical pathoses were assessed over time by using modified Ryge criteria. The probability distributions of these variables were calculated for the baseline data and for the recall data. An analysis of survival was made by using the Kaplan-Meier method. Results: Eighteen FDPs were clinically evaluated at 5 years and 1 at 48 months. Fifteen were rated Alpha for fracture measurements, and 2 were rated Bravo (minor chipping of veneering porcelain and not requiring restoration replacement). Two were rated Charlie (major chipping of veneering porcelain and requiring restoration replacement). Eighteen FDPs were rated Alpha for marginal integrity, and 1 rated Bravo. All restorations were rated Alpha for marginal discoloration. One participant experienced root fracture after 60 months, while another was treated surgically for a periapical pathosis on an endodontically treated abutment. Conclusions: Zirconium dioxide-based posterior 3-unit FDPs performed well after 5 years of service.

Original languageEnglish (US)
Pages (from-to)214-222
Number of pages9
JournalJournal of Prosthetic Dentistry
Volume108
Issue number4
DOIs
StatePublished - Oct 1 2012

Fingerprint

Dental Prosthesis
tetrachloroisophthalonitrile
Computer-Aided Design
Dental Porcelain
Tooth
Glass Ionomer Cements
Bicuspid
Ceramics
Survival Analysis
Informed Consent
Tongue
formycin diphosphate
zirconium oxide
Cohort Studies
Metals
Technology

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Clinical efficacy of veneered zirconium dioxide-based posterior partial fixed dental prostheses : Five-year results. / Raigrodski, Ariel J.; Yu, Alika; Chiche, Gerard Jules; Hochstedler, J. L.; Mancl, Lloyd A.; Mohamed, Shawky E.

In: Journal of Prosthetic Dentistry, Vol. 108, No. 4, 01.10.2012, p. 214-222.

Research output: Contribution to journalArticle

Raigrodski, Ariel J. ; Yu, Alika ; Chiche, Gerard Jules ; Hochstedler, J. L. ; Mancl, Lloyd A. ; Mohamed, Shawky E. / Clinical efficacy of veneered zirconium dioxide-based posterior partial fixed dental prostheses : Five-year results. In: Journal of Prosthetic Dentistry. 2012 ; Vol. 108, No. 4. pp. 214-222.
@article{9a1cf1e000b3487f9f5f7a8458b5a0e1,
title = "Clinical efficacy of veneered zirconium dioxide-based posterior partial fixed dental prostheses: Five-year results",
abstract = "Statement of problem: In recent years, zirconium dioxide-based partial fixed dental prostheses (FDP) have been suggested as an alternative treatment to traditional metal ceramic FDPs. However, clinical studies evaluating their longevity and related complications are limited. Purpose: The purpose of this cohort clinical study was to assess the efficacy of zirconium dioxide-based posterior 3-unit FDPs. Material and methods: Twenty 3-unit posterior FDPs (Lava) were placed in 16 participants missing a second premolar or a first molar. All participants met specific inclusion and exclusion criteria and provided informed consent. All teeth were prepared in a standardized manner: occlusal reduction of 1.5 to 2 mm; axial reduction of 1 to 1.5 mm; a 1.0 mm 360-degree rounded shoulder placed 0.5 mm subgingivally on the facial aspect and supragingivally on the lingual aspect on sound tooth structure; and rounded internal line angles. Definitive impressions were made with vinyl polysiloxane impression material. Frameworks were fabricated by using computer-aided design and computer-aided manufacturing (CAD/CAM) technology with a uniform retainer thickness of 0.6 mm and a minimal connector surface area of 9 mm2. Restorations were luted with resin-modified glass ionomer cement (Rely-X Luting). Participants were recalled at 2 weeks, 6 months, and 12 months, and thereafter, annually for up to 60 months. Clinical fracture measurements, marginal discoloration, marginal adaptation, radiographic proximal recurrent caries, and periapical pathoses were assessed over time by using modified Ryge criteria. The probability distributions of these variables were calculated for the baseline data and for the recall data. An analysis of survival was made by using the Kaplan-Meier method. Results: Eighteen FDPs were clinically evaluated at 5 years and 1 at 48 months. Fifteen were rated Alpha for fracture measurements, and 2 were rated Bravo (minor chipping of veneering porcelain and not requiring restoration replacement). Two were rated Charlie (major chipping of veneering porcelain and requiring restoration replacement). Eighteen FDPs were rated Alpha for marginal integrity, and 1 rated Bravo. All restorations were rated Alpha for marginal discoloration. One participant experienced root fracture after 60 months, while another was treated surgically for a periapical pathosis on an endodontically treated abutment. Conclusions: Zirconium dioxide-based posterior 3-unit FDPs performed well after 5 years of service.",
author = "Raigrodski, {Ariel J.} and Alika Yu and Chiche, {Gerard Jules} and Hochstedler, {J. L.} and Mancl, {Lloyd A.} and Mohamed, {Shawky E.}",
year = "2012",
month = "10",
day = "1",
doi = "10.1016/S0022-3913(12)60165-6",
language = "English (US)",
volume = "108",
pages = "214--222",
journal = "Journal of Prosthetic Dentistry",
issn = "0022-3913",
publisher = "Mosby Inc.",
number = "4",

}

TY - JOUR

T1 - Clinical efficacy of veneered zirconium dioxide-based posterior partial fixed dental prostheses

T2 - Five-year results

AU - Raigrodski, Ariel J.

AU - Yu, Alika

AU - Chiche, Gerard Jules

AU - Hochstedler, J. L.

AU - Mancl, Lloyd A.

AU - Mohamed, Shawky E.

PY - 2012/10/1

Y1 - 2012/10/1

N2 - Statement of problem: In recent years, zirconium dioxide-based partial fixed dental prostheses (FDP) have been suggested as an alternative treatment to traditional metal ceramic FDPs. However, clinical studies evaluating their longevity and related complications are limited. Purpose: The purpose of this cohort clinical study was to assess the efficacy of zirconium dioxide-based posterior 3-unit FDPs. Material and methods: Twenty 3-unit posterior FDPs (Lava) were placed in 16 participants missing a second premolar or a first molar. All participants met specific inclusion and exclusion criteria and provided informed consent. All teeth were prepared in a standardized manner: occlusal reduction of 1.5 to 2 mm; axial reduction of 1 to 1.5 mm; a 1.0 mm 360-degree rounded shoulder placed 0.5 mm subgingivally on the facial aspect and supragingivally on the lingual aspect on sound tooth structure; and rounded internal line angles. Definitive impressions were made with vinyl polysiloxane impression material. Frameworks were fabricated by using computer-aided design and computer-aided manufacturing (CAD/CAM) technology with a uniform retainer thickness of 0.6 mm and a minimal connector surface area of 9 mm2. Restorations were luted with resin-modified glass ionomer cement (Rely-X Luting). Participants were recalled at 2 weeks, 6 months, and 12 months, and thereafter, annually for up to 60 months. Clinical fracture measurements, marginal discoloration, marginal adaptation, radiographic proximal recurrent caries, and periapical pathoses were assessed over time by using modified Ryge criteria. The probability distributions of these variables were calculated for the baseline data and for the recall data. An analysis of survival was made by using the Kaplan-Meier method. Results: Eighteen FDPs were clinically evaluated at 5 years and 1 at 48 months. Fifteen were rated Alpha for fracture measurements, and 2 were rated Bravo (minor chipping of veneering porcelain and not requiring restoration replacement). Two were rated Charlie (major chipping of veneering porcelain and requiring restoration replacement). Eighteen FDPs were rated Alpha for marginal integrity, and 1 rated Bravo. All restorations were rated Alpha for marginal discoloration. One participant experienced root fracture after 60 months, while another was treated surgically for a periapical pathosis on an endodontically treated abutment. Conclusions: Zirconium dioxide-based posterior 3-unit FDPs performed well after 5 years of service.

AB - Statement of problem: In recent years, zirconium dioxide-based partial fixed dental prostheses (FDP) have been suggested as an alternative treatment to traditional metal ceramic FDPs. However, clinical studies evaluating their longevity and related complications are limited. Purpose: The purpose of this cohort clinical study was to assess the efficacy of zirconium dioxide-based posterior 3-unit FDPs. Material and methods: Twenty 3-unit posterior FDPs (Lava) were placed in 16 participants missing a second premolar or a first molar. All participants met specific inclusion and exclusion criteria and provided informed consent. All teeth were prepared in a standardized manner: occlusal reduction of 1.5 to 2 mm; axial reduction of 1 to 1.5 mm; a 1.0 mm 360-degree rounded shoulder placed 0.5 mm subgingivally on the facial aspect and supragingivally on the lingual aspect on sound tooth structure; and rounded internal line angles. Definitive impressions were made with vinyl polysiloxane impression material. Frameworks were fabricated by using computer-aided design and computer-aided manufacturing (CAD/CAM) technology with a uniform retainer thickness of 0.6 mm and a minimal connector surface area of 9 mm2. Restorations were luted with resin-modified glass ionomer cement (Rely-X Luting). Participants were recalled at 2 weeks, 6 months, and 12 months, and thereafter, annually for up to 60 months. Clinical fracture measurements, marginal discoloration, marginal adaptation, radiographic proximal recurrent caries, and periapical pathoses were assessed over time by using modified Ryge criteria. The probability distributions of these variables were calculated for the baseline data and for the recall data. An analysis of survival was made by using the Kaplan-Meier method. Results: Eighteen FDPs were clinically evaluated at 5 years and 1 at 48 months. Fifteen were rated Alpha for fracture measurements, and 2 were rated Bravo (minor chipping of veneering porcelain and not requiring restoration replacement). Two were rated Charlie (major chipping of veneering porcelain and requiring restoration replacement). Eighteen FDPs were rated Alpha for marginal integrity, and 1 rated Bravo. All restorations were rated Alpha for marginal discoloration. One participant experienced root fracture after 60 months, while another was treated surgically for a periapical pathosis on an endodontically treated abutment. Conclusions: Zirconium dioxide-based posterior 3-unit FDPs performed well after 5 years of service.

UR - http://www.scopus.com/inward/record.url?scp=84867004907&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867004907&partnerID=8YFLogxK

U2 - 10.1016/S0022-3913(12)60165-6

DO - 10.1016/S0022-3913(12)60165-6

M3 - Article

C2 - 23031727

AN - SCOPUS:84867004907

VL - 108

SP - 214

EP - 222

JO - Journal of Prosthetic Dentistry

JF - Journal of Prosthetic Dentistry

SN - 0022-3913

IS - 4

ER -