None
Conditions
Interventions
Observation group:none
Sponsors
Stomatology Hospital,Zhejiang University School Medicine
Eligibility
Sex/Gender
All
Age
18 Years to 50 Years
Inclusion criteria
Inclusion criteria: 1.Healthy premolars extracted for orthodontic treatment needs; 2.The patient is over 18 years old but not over 50 years old; 3.Informed consent for inclusion in the study and willingness to cooperate in completing follow-up;
Exclusion criteria
Exclusion criteria: 1.The extracted teeth have enamel caries, underdevelopment, defects, fractures, and significant wear problems; 2.Suffering from systemic diseases or serious complications; 3.physical disability; 4.Pregnancy and lactation period; 5.xerostomia; 6.Communication barriers or poor compliance;
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Nanohardness; | — |
Secondary
| Measure | Time frame |
|---|---|
| Elastic Modulus;Chemical structure;Micromorphology; | — |
Countries
China
Contacts
Public ContactWang Chaoyang
Stomatology Hospital,Zhejiang University School Medicine
Outcome results
None listed