All on Six Versus Parallel Implant Distribution for Maxillary Denture Opposing Mandibular All on Four

Peri-Implantitis Clinical Trial

— ASPISRMSDOMF  

Official title:

All on Six Versus Parallel Implant Distribution for Screw Retained Maxillary Fixed Single Denture Opposing Mandibular All on Four Implant Distribution

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05960500
• Other study ID #: A05080622
• Status: Completed
• Phase: N/A
• Start date: June 5, 2022
• Est. completion date: June 15, 2023

Study information

• Verified date: July 2023
• Source: Mansoura University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Thirty maxillary edentulous patients with previous mandibular All-on-4 screw retained prosthesis and their age ranged from 55 to 65 years were selected from the outpatient clinic, of prosthodontics Department, Faculty of Dentistry, Mansoura University from March 2022 to July2022 and 80% power was used to calculate patients sample according to the results of a previous study 1 which showed no significant difference was reported when comparing occlusal stability ,implant stability and periimplant soft tissue changes between different implants angulation of both groups. (Effect size=.70mm and α=.05). The power analysis was performed using the G*Power program (version 3.1.5, Kiel, Germany)

Description:

the aim of this study is to compare between All-on-Six distributed dental implants "Anterior 4 Implant Parallel and Posterior 2 Implant Distally Tilted" versus parallel distribution supporting screw retained maxillary single denture regarding soft tissue changes around implants, implant stability and occlusal stability.

The primary outcome is to study implant stability and occlusal stability. The secondary outcome is to evaluate periimplant soft tissue changes. The null hypothesis of this study will be there is no difference between the two studied groups.All patients were informed about the proposal of this study, the line of treatment, and the need for regular and frequent recalls. Their acceptance to participate in this study was confirmed and they signed the consent form of the ethical committee of the faculty of dentistry. This study gained the approval of the ethical committee of the Faculty of Dentistry, with approval number (A05080622).

all the patients were divided randomly into two equal groups as follows Group I patients received four axially placed anterior Implants(*General system) in lateral and first premolar region and two distally tilted 30 degree posteriorly in molar region relative to the occlusal plane supporting screw retained maxillary single denture.

Group II patients received 6 implants in parallel distribution in anterior, premolar and molar region

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: June 15, 2023
• Est. primary completion date: May 10, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 55 Years to 65 Years

Eligibility

Inclusion Criteria:

• patient with maxillary edentulous alveolar ridges.

• patient complained from insufficient retention and stability of their maxillary single denture.

Exclusion Criteria:

• medically compromised patients.

• patients with parafunctional habits.

Related Conditions & MeSH terms

• Implant Complication
• Occlusal Trauma
• Peri-Implantitis

Intervention

Procedure:
• implant
All on six versus parallel implant distribution

Locations

Country	Name	City	State
Egypt	Mansoura university	Mansoura	Dakahlya

Sponsors (1)

Lead Sponsor	Collaborator
Mansoura University

Country where clinical trial is conducted

Egypt, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	soft tissue changes around implants	The distance between marginal gingiva and the tip of the probe was measured using a calibrated plastic periodontal probe this distance is considered as pocket depth (PD).Probing depth was evaluated at buccal, lingual, mesial and distal aspect of each implant. using a calibrated pressure sensitive plastic periodontal probe.	1 year
Secondary	occlusal stability	- Evaluation of the the concentration, changes of occlusion and visualization of the masticatory pressure conditions and amount of occlusal wear occured by Digital Occlusal Analyzer System (OccluSense)	1 year
Secondary	implant stability	- Evaluation of the rate of Implant stability A range of PTVs (- 6 to +2) was considered for integrated implants that was measured by periotest device*. The hand piece was. held perpendicular to the long axis of the implants.	1year