Edentulous Jaw
Conditions
Brief summary
patients will be equally and randomly divided into 2 groups. Each group contains seven patients: Digital Group: implant supported maxillary overdenture will be constructed using electronic facebow to record maxillo-mandibular relation. Static Group: implant supported maxillary overdenture will be constructed using the conventional jaw relation method. Radiographic evaluation for crestal bone height around implants using direct digital periapical paralleling cone technique. All data of radiographic evaluation were collected and tabulated then statistically analyzed using SPSS software.
Detailed description
* Conventional single upper denture will be made for all patients. * Occlusal adjustment of lower teeth for all patients by T-scan using the single upper conventional denture. * The single maxillary denture will be duplicated with radiopaque markers and CBCT will be used to determine the exact positions of the implants. Surgical procedures 1. Surgery will be done under local anesthesia. 2. Drilling will be carried out under copious sterile irrigation. 3. four implants will be inserted in canines and second premolar area in the maxilla. After 3-4 months of implants placement, patients will be equally and randomly divided into 2 groups. Each group contains seven patients: Digital group: For this group, implant supported maxillary overdenture will be constructed using electronic facebow to record maxillo-mandibular relation. Static group: For this group, implant supported maxillary overdenture will be constructed using the conventional jaw relation method. Post insertion: * Clinical evaluation for any signs of inflammation is made. * Further occlusal refining of lower teeth by T-scan is done with final overdenture. Method of evaluation: Radiographic evaluation for crestal bone height around implants using direct digital periapical paralleling cone technique. All data of radiographic evaluation were collected and tabulated then statistically analyzed using SPSS software.
Interventions
PROCEDUREMaxillary implant supported overdenture , Digital jaw relation group
implant supported maxillary overdenture constructed using electronic facebow to record maxillo-mandibular relation.
PROCEDUREMaxillary implant supported overdenture , Static jaw relation group
implant supported maxillary overdenture constructed using the conventional jaw relation method.
Sponsors
Ain Shams University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
one of the study authors rather than the outcome assessors will take radiographic records and assess bone changes
Intervention model description
4 implants inserted in fully edentulous maxilla, then loading with ball abutments for maxillary overdenture
Eligibility
Sex/Gender
ALL
Age
35 Years to 60 Years
Healthy volunteers
Yes
Inclusion criteria
* Age: under 60 years. * Completely edentulous maxillary arch. * Opposing natural dentition in the mandibular arch. * Residual mandibular ridge has adequate bone and covered by firm healthy mucosa. * Class I maxillary-mandibular relationship. * Normal salivary flow with normal viscosity. * Systemically free patients.
Exclusion criteria
* Patients with poor oral hygiene. * Patients with abnormal oral habits as (bruxism, clenching, tongue thrusting). * Bone or mucosal diseases. * Metabolic diseases or uncontrolled diabetes and TMJ disorders. * Conditions that may complicate the treatment like; large tongue, gagging reflex and limited mouth opening. * Patients who are smokers.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Marginal bone loss around implants | 18 month | Crestal bone changes around implants supporting maxillary single overdenture opposed by natural dentition were measured using periapical radiography through long cone technique |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| digital occlusal analysis using T-scan | 1 year | Immediately after implant overdenture insertion, occlusal force magnitude, time and equilibrium were measured by the T-scan digital system by instructing the patient to bite on a sensor attached to a laptop on which the biting force was displayed as a count of disocclusion time and occlusion time, dictating the degree of any occlusal interference. The system also shows the degree of centralization of biting force between the right and left sides of the arch. |
Countries
Egypt
Outcome results
None listed