Clinical trial NCT02907515: Maintenance and Cost Effectiveness of Cendres Metaux Locator (CM-LOC) Resin Matrix Versus Ball Nylon Matrix Attachment Retaining Single Implant Mandibular Complete Overdentures
Official title: Maintenance and Cost Effectiveness of CM-LOC Resin Matrix Versus Ball Nylon Matrix Attachment Retaining Single Implant Mandibular Complete Overdentures
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Completely Edentulous
Keywords: single implant retained mandibular overdenture
Lead sponsor: Cairo University
Sponsor class: OTHER
First posted: 2016-09-20
Enrollment: 112
Sex: ALL
Minimum age (years): 50
Maximum age (years): 69
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: HEALTH_SERVICES_RESEARCH

Brief summary: The single implant overdenture (IOD) represent the simplest form of IODs compared to the 2 IOD which is the traditional gold standard IOD treatment option. Mandibular single-implant overdentures are proven to be a successful treatment option for older edentulous adults but we need to know if the CM-LOC attachment will retain its superiority over the ball attachments intraorally regarding the prosthetic complications in single implant retained overdenture like in 2 IOD


Eligibility criteria: Inclusion Criteria:

* Completely edentulous male or female patients between the ages of 50 to 69.
* No contraindications for implantation.
* Each patient has to perform both a random blood sugar and Glycosylated Hemoglobin analysis. Patients with a Glycosylated hemoglobin test HbA1c up to 8% and a normal blood sugar level (79 to 110) or controlled diabetic patients (90-130 fasting according to American Association of Diabetes) will be included.
* Sufficient bone width (≥ 6 mm) in the anterior region to place an implant. It could be either normally present or achieved by bone plateauing. This will be confirmed by cone beam computed tomographic (CBCT) scans.
* Residual bone height ranging from 11-20 mm with the lowest vertical height in the midline of the mandible not less than 13 mm (Class II or III according to McGarry et al\[1\] 1999). This will be confirmed by the CBCT.
* Patients seeking to install a single symphyseal implant and for whom new dentures will be constructed.
* Patients, who are dissatisfied with the retention and stability of their technically satisfactory dentures.
* Patients, who already have existing maxillary and mandibular complete dentures, and after examination of the mandibular dentures, it is found that there are technical problems with regard to denture design and/or occlusion; then new maxillary and mandibular dentures will be fabricated
* All patients should have adapted to their dentures for at least six weeks before being included in the trial.
* Patients providing written informed consents to participate in the trial and this will be done before the scheduled date for implant installation.

Exclusion Criteria:

* Patients with a systemic or local contra-indication for implant placement.
* Satisfied patients with the retention of their mandibular denture as well as unsatisfied patients with their maxillary denture.
* Patient with a mandibular denture height less than 6 mm between the base of the denture and the incisal edge of the central incisors (as measured by a caliper) or with 12 mm crown height space as measured by a ruler from the incisal edge till the crest of the ridge. This will be done from a putty index of the diagnostic set up.
* Incompliant and not cooperative patients.
* Patients smoking more than 10 cigarettes per day

Primary outcomes:
measure: number of prosthodontic Maintenance events
timeFrame: 1 year
Secondary outcomes:
measure: cost effectiveness (which treatment will cost less money)
timeFrame: 1 year
Other outcomes:
Locations:
city: Cairo
country: Egypt
facility: Cairo Universty
Study officials:
References: