Partially edentulous arches
Conditions
Interventions
Test Group:digital precise control technology of occlusal contact intensity of posterior implant supported fixed prostheses by means of constructing occlusal surface via mirror method, virtual quantit
Control Group:Conventional approach
Sponsors
Peking University School and Hospital of Stomatology
Eligibility
Sex/Gender
All
Age
20 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. The patient is no younger than 20 years of age; 2. Implant-supported single crown or fixed prostheses with no more than 3 units; 3. Intact occlusal surface of the corresponding contralateral tooth, with no axial or positional abnormalities; 4. Absence of significant abnormalities(premature contact and/or occlusal interference) and clinical symptoms in pre-operative occlusal inspection; 5. Good periodontal health or complete systemic periodontal treatment; 6. The patient has signed the informed consent; 7. Absence of any local or systemic diseases that might contraindicate implant surgery.
Exclusion criteria
Exclusion criteria: 1. Distal extension exists in partially edentulous arches; 2. The position or axial direction of the implants antagonistic tooth is significantly different from its corresponding contralateral tooth; 3. There is a implant restoration adjacent or opposite to the implant; 4. The patient suffers from temporomandibular diseases; 5. The patient suffers from oral parafunctional habits; 6. Occlusal adjustment, resin filling, orthodontic treatment, tooth extraction or any other treatments which might change the distribution of occlusal force is conducted after implant restoration delivery; 7. The patient is a pregnant or breastfeeding woman; 8. The patient smokes more than 10 cigarettes per day; 9. Any medical condition requiring prolonged use of steroids or bisphosphonate; 10. The patient suffers from physical handicaps or mental diseases that would interfere with the ability to perform adequate oral hygiene; 11. History of chemotherapy within 5 years prior to surgery; 12. History of radiation in the head and neck region; 13. Any conditions which would prevent the completion of study participation or interfere with analysis of study results, such as a history of non-compliance or unreliability.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Occlusal Clearance Measurement(Intraoral Scanning Method); | — |
Secondary
| Measure | Time frame |
|---|---|
| Occlusal Clearance Measurement(Silicone Interocclusal Recording Material Method);Articulating Paper Evaluation;T-Scan System Evaluation;Subjective Effect Evaluation using Visual Analogue Scales;Electromyography of Masticatory Muscle;Occlusal Adjustment Time;Adjustment Amount on Occlusal Surfaces;Lateral Occlusion Interference; | — |
Countries
China
Contacts
Public ContactLei Zhang
Peking University School and Hospital of Stomatology
Outcome results
None listed