Prospective Registry of Immediate/Delayed Loading of Implants in the Cranial Bone-grafted Severely Atrophic Jaw (ILICRAN)

Edentulism is often associated with a negative psychosocial impact. The concept of prosthetic rehabilitation in which a prosthesis is supported by osseointegrated implants, was first introduced in the late 1960s by Brånemark et al. and offers an interesting alternative to removable prosthesis. However, for patients with a severely atrophic maxilla or mandible, cranial bone grafting of the jaw is required to increase bone width and height necessary for implant insertion. An active collaboration between the surgeons from the Oral and Maxillofacial Department and the prosthodontist from the Department of Dentistry has been established for continuous quality improvement of the concept of (immediate/delayed) implant loading in patients requiring cranial bone grafts to augment their severely atrophic jawbone.

The investigators aim to develop a prospective database registering (immediate/delayed) implant loading data of all patients eligible according to the protocol. Patient demographics, surgical, dental, prosthetic and patient satisfaction parameters are collected during consecutive visits within the framework of routine practice.

Development of a database registering immediate functional loading data secondary to cranial bone-grafting of a severely atrophic jaw, will provide more information about potential patient, surgical and prosthetic factors influencing long-term biological and mechanical stability, as well as patient satisfaction. Moreover, registration of those results could function as a measurement of quality of care, and could be used for sample size calculation for future large prospective trials.

Study Overview

• Status: Terminated
• Conditions: Jaw, Edentulous; Jaw, Partially Edentulous

• Study Type: Observational
• Enrollment (Actual): 120

Contacts and Locations

Study Locations

• Belgium
  • Other (Non U.s.)
    • Brugge, Other (Non U.s.), Belgium, 8000
      • Araceli Diez-Fraile

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

all consenting patients that require fixed prosthetic rehabilitation in a cranial bone-grafted severely atrophic jaw

Description

Inclusion Criteria:

• Patients of all ages
• Patients of all genders
• Patients with moderate to extreme bone atrophy of the jaw (class IV to VI according to Cawood and Howell (Cawood & Howell, 1988), caused by terminal periodontitis or edentulism
• Patients requiring bone augmentation procedures through cranial bone grafting for jaw reconstruction
• Patients ineligible for conventional removable prosthetic rehabilitation

Exclusion Criteria:

• Patients not eligible according to abovementioned criteria
• Patients with severe uncontrolled diabetes
• Patients with cranial vault without diploe and/or cranial vault thickness <3mm, as defined with cone-beam CT (De Ceulaer, et al., 2012)

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
IPI survival rate at time of immediate loading in patients with cranial bone-grafted severely atrophic jaw	within 6 months postsurgery
definitive implant survival rate in patients with cranial bone-grafted severely atrophic jaw	within 12 months postoperative
bone-graft resorption, as evaluated through cone-beam computed tomography	within 12 months postoperative
prosthesis survival rate	until a maximum of 10 years follow-up
bone-graft resorption, as evaluated through cone-beam computed tomography	until a maximum of 10 years follow-up

Secondary Outcome Measures

Outcome Measure	Time Frame
Prevalence of patients with severely atrophic jaw requiring cranial bone-grafting	every 12 months, until a maximum of ten years
Potential biologic or mechanical risk factors that could predict undesirable functional or aesthetic outcome, through regression analysis	within 12 months postsurgery

Other Outcome Measures

Outcome Measure	Time Frame
patient satisfaction, through visual analogue scale	within 12 months postsurgery (short-term); at annual follow-up until a maximum of 10 years follow-up (long-term)

Collaborators and Investigators

• Sponsor: AZ Sint-Jan AV
• Investigators: Principal Investigator: Johan Abeloos, MD, Department of Oral and Maxillofacial Surgery, General Hospital Saint-John Bruges, Bruges, Belgium

Study record dates

Study Major Dates

• Study Start (Actual): January 1, 2007
• Primary Completion (Actual): February 1, 2021
• Study Completion (Actual): February 1, 2021

Study Registration Dates

• First Submitted: January 11, 2016
• First Submitted That Met QC Criteria: January 22, 2016
• First Posted (Estimate): January 27, 2016

Study Record Updates

• Last Update Posted (Actual): February 28, 2022
• Last Update Submitted That Met QC Criteria: February 23, 2022
• Last Verified: February 1, 2022

More Information

Terms related to this study

• Keywords: dental implants; immediate loading; maxilla; alveolar ridge augmentation; dental prosthesis; implant supported; severely atrophic jaw; cranial bone-graft; augmentation maxilla/mandible; sinus-floor elevation/sinuslift; provisional implants; temporary implants; one-stage surgery
• Additional Relevant MeSH Terms: Musculoskeletal Diseases; Stomatognathic Diseases; Mouth Diseases; Pathological Conditions, Anatomical; Tooth Diseases; Jaw Diseases; Atrophy; Mouth, Edentulous; Jaw, Edentulous
• Other Study ID Numbers: B049201525497

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO