maxillary and mandibular defects
Conditions
Interventions
Free hand group:Free hand guiding tooth preparation
Rigid template prepration group:Tooth preparation using rigid template
Conventional groups:Restorative treatments by maxillary or mandibular prosthesis fabricated by conventional methods
Digital groups:Restorative treatments by maxillary or mandibular prosthesis fabricated by digital methods
Sponsors
Peking university hospital of stomatology
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: (1) Patients acquired maxillary or mandibular defects (2) At least one remaining premolar or molar prepares the fovea and guide plane (3) The abutment tooth is loose, not more than degree II, and the alveolar bone resorption is not more than 1/2 (4) The remaining teeth, including the abutments, are toothless or well-treated, have no undesirable restorations, and no periodontal disease or periodontal disease is controlled by treatment (5) Possess the ability to act and express themselves completely autonomously
Exclusion criteria
Exclusion criteria: (1) Endentulous patients with maxillary or mandibular defects (2) Patients who are unable to cooperate with prosthetic restorations (3) Patients who are unwilling to participate in this study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Functional evaluation of maxillary or mandibular prosthesis;3D accuricies of guiding plane rest seat preparation;Direction trueness and precision of guiding plane preparation;Intaglio surface fit of maxillary or mandibular prosthesis; | — |
Secondary
| Measure | Time frame |
|---|---|
| Fitting accuricies of rigid template;Fabricating accuricies of rigid template;Chairside operation time and preparation efficiency;Fabrication accuracy of maxillary or mandibular prosthesis;Fabricating time of maxillary or mandibular prosthesis; | — |
Countries
People's Republic of China
Contacts
Public ContactYe Hongqiang
Peking university hospital of stomatology
Outcome results
None listed