Clinical trial NCT04272112: Clinical Performance of All-ceramic Posterior Crowns. A Randomized, Prospective Clinical.
Official title: Clinical Performance of All-ceramic Posterior Crowns. A Randomized, Prospective Clinical Trial Comparing Glass-ceramic Crowns to Monolithic Translucent Zirconia Crowns With and Without a Semi-veneer
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Dental Prosthesis Failure
Keywords: all ceramic
zirconia
crown
clinal trial
Lead sponsor: Malmö University
Sponsor class: OTHER
First posted: 2020-02-17
Enrollment: 90
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This is a randomized, prospective clinical trial. The aim of the project is to assess the clinical performance of three types of tooth-supported crowns; monolithic high translucent colored zirconia, crowns of high-translucent colored zirconia with a mini-veneer buccally and crowns of lithium-disilicate glass-ceramic. Crowns will be placed on posterior teeth and evaluated from an esthetic and functional point of view, to identify if there are any differences between the materials.

Detailed description: 90 monolithic tooth-supported crowns are planned to be included in the study; 30 crowns of high translucent zirconia (BruxZir, Glidewell), 30 crowns of high translucent zirconia (BruxZir, Glidewell) with a mini-veneer of porcelain and 30 crowns of lithium-disilicate glass-ceramic (IPS e.max CAD, Ivoclar Vivadent AG, Schaan, Liechtenstein).

Patients with indications for single crowns will be recruited from three general dental clinics. Inclusion criteria for participating in this study are patients in need of crowns in the posterior dentition, premolars and molars. Exclusion criteria are patients with high caries activity/risk for caries and/or advanced periodontal disease. Patients who meet the criteria will be offered the opportunity to participate in the study. They will receive written information about the study design, clinical procedures and the materials and methods to be used. Patients who are interested will confirm their participation by a written consent. The patients will be offered an extended warranty for the crowns in case of failure.

The study has been approved by the Regional Ethical Board in Lund, Sweden

Eligibility criteria: Inclusion criteria:

* need of one or more dental crowns in the posterior dentition, premolars and molars

Exclusion criteria:

* high caries activity/risk for caries and/or advanced periodontal disease

Primary outcomes:
measure: Clinical perfomance
timeFrame: 12 month
measure: Clinical perfomance
timeFrame: 24 month
measure: Clinical perfomance
timeFrame: 36 month
measure: Clinical perfomance
timeFrame: 60 month
Secondary outcomes:
measure: Patient questionnaire
timeFrame: 12 month
measure: Patient questionnaire
timeFrame: 24 month
measure: Patient questionnaire
timeFrame: 36 month
measure: Patient questionnaire
timeFrame: 60 month
Other outcomes:
Locations:
city: Malmö
country: Sweden
facility: Malmö University
Study officials:
affiliation: Malmö University
name: Christel Larsson, PhD
role: STUDY_CHAIR
References:
citation: Le M, Papia E, Larsson C. The clinical success of tooth- and implant-supported zirconia-based fixed dental prostheses. A systematic review. J Oral Rehabil. 2015 Jun;42(6):467-80. doi: 10.1111/joor.12272. Epub 2015 Jan 10.
citation: LE M, Larsson C, Papia E. Bond strength between MDP-based cement and translucent zirconia. Dent Mater J. 2019 Jun 1;38(3):480-489. doi: 10.4012/dmj.2018-194. Epub 2019 May 17.
citation: Larsson C, Wennerberg A. The clinical success of zirconia-based crowns: a systematic review. Int J Prosthodont. 2014 Jan-Feb;27(1):33-43. doi: 10.11607/ijp.3647.
citation: Johansson C, Kmet G, Rivera J, Larsson C, Vult Von Steyern P. Fracture strength of monolithic all-ceramic crowns made of high translucent yttrium oxide-stabilized zirconium dioxide compared to porcelain-veneered crowns and lithium disilicate crowns. Acta Odontol Scand. 2014 Feb;72(2):145-53. doi: 10.3109/00016357.2013.822098. Epub 2013 Jul 18.