Retrospective Study on Clinical Performance of Screw-retained Implant Crowns

Not Applicable

Completed

• Conditions: Dental Implant Failed
• Interventions: Other: Dental prosthetics

• Registration Number: NCT04370314
• Lead Sponsor: University of Bern

Brief Summary

Survival and success rates of all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology after at least one year in function.

Survival and success rates (clinical, radiologic and esthetic) of all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology after 2 to 10 years in function.

Establishment of a database of patients with all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology for future longitudinal retrospective studies.

Detailed Description

Not available

Study Timeline

• Study Start: 2017-09-07
• Primary Completion: 2019-04-26
• Study Completion: 2019-11-21
• Study First Submitted: 2020-04-24
• Study First Submitted QC: 2020-04-29
• Study First Posted: 2020-04-30
• Status Verified: 2020-05
• Last Update Submitted: 2020-05-04
• Last Update Posted: 2020-05-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 32

Inclusion Criteria

• Patients with at least one fixed all-ceramic reconstruction (single implant restoration on BL implant with individualized zirconia abutment directly screwed and directly veneered, three- to five-unit zirconia bridges directly veneered, single tooth crown made of a lithium disilicate glass-ceramic (LS2) blank)
• Written informed consent

Exclusion Criteria

• Pregnancy at the time of the follow-up examination
• Mental handicap
• Patients that could not be contacted/located
• Patients not interested in participating
• Patients with the need of antibiotic prophylaxis prior to a clinical examination

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Zirconia implant-supported crown	Dental prosthetics	Full zirconia implant-supported crown

Primary Outcome Measures

Name	Time	Method
Survival and success rates of all-ceramic implant-supported fixed reconstructions	1 year	Number of all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology still in place after at least one year in function.

Secondary Outcome Measures

Name	Time	Method
Number of patients with biological complications assessed via clinical examination	1 year	A clinical evaluation of the implant crowns will be performed in order to detect any kind of biological complication, namely periimplantitis and perimucositis
Number of patients with technical complications	1 year	A clinical evaluation of the implant crowns will be performed in order to detect any kind of complication, namely chipping, screw loosening or abutment fracture
Number of patients with biological complications assessed via periapical x-ray	1 year	A radiological evaluation of the implant crowns will be performed to measure and evaluate the bone crestal changes
Patient satisfaction as assessed by VAS A	1 year	Patients assess by patient questionnaire their implant reconstructions, in terms of function by means of a Visual Analog Scale (VAS A), where the parameter will be scored from 1 to 10.
Patient satisfaction as assessed by VAS B	1 year	Patients assess by patient questionnaire their implant reconstructions, in terms of esthetics by means of a Visual Analog Scale (VAS B), where the parameter will be scored from 1 to 10.
Esthetic outcome	1 year	The esthetic examination included the Pink and White Esthetic Score Assessment (PES/WES) according to Belser et al. 2009 \& Furhäuser et al. 2005 on a scale from 0-10 whereas 10 means an optimal outcome.

Trial Locations

Locations (1)

University of Bern; 🇨🇭 Bern, Switzerland