Defect of dentition
Conditions
Interventions
Observation group:None
Sponsors
The Stomatology Hospital, Zhejiang University School of Medicine
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1.Age: age above 18 years old 2.Unilateral and bilateral free end loss: patients with unilateral or bilateral free end tooth loss, such as unilateral posterior tooth loss of the maxilla or mandible, and the missing time is more than 3 months, to ensure that the alveolar ridge absorption at the missing site is stable. 3. Basically normal occlusion: the opposite dentition was complete, the occlusion relationship was basically normal, and there was no obvious malocclusion, such as cross jaw, open jaw, etc., to reduce the interference of other factors on the occlusal relationship recording. 4. Good oral health: no acute inflammation, ulcers and other diseases in the mouth, no periodontitis, caries and other untreated oral diseases, to avoid these diseases to have an impact on the scanning results. 5. General health status: patients have no serious systemic diseases, such as heart disease, hypertension, diabetes and other uncontrolled conditions, to ensure that patients can tolerate oral scanning and subsequent treatment. 6. Informed consent: patients voluntarily participated in this study and signed an informed consent form to understand the purpose, methods, possible risks and benefits of the study.
Exclusion criteria
Exclusion criteria: 1.Unstable occlusion: if the patient is unable to form a stable occlusion relationship with the remaining teeth, it may interfere with the results of oral scanning and affect the accurate recording of occlusion relationship. 2. Severe alveolar ridge absorption: if the alveolar ridge in the missing tooth area of the patient is seriously absorbed, resulting in irregular shape or insufficient height of the alveolar ridge, the accuracy and stability of the scan may be affected. 3. Inability to cooperate with the examination: patients with mental illness, disturbance of consciousness or other reasons that cannot cooperate with the oral scan examination and treatment should be excluded. 4. Allergy to scanning equipment: Patients who are allergic to the materials or disinfectants of oral scanning equipment may have allergic reactions during the examination, which may affect the conduct of the study. 5. recent orthodontic treatment or occlusal adjustment within 6 months. 6.Other oral treatments (e.g., tooth extraction, implant placement) were planned during the study period.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Occlusal surface deviation (micron); | — |
Countries
China
Contacts
Public ContactHe Fuming
The Stomatology Hospital, Zhejiang University School of Medicine
Outcome results
None listed