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Comparative clinical study of enamel antagonist wear opposing CAD-CAM all-ceramic crowns: A Randomized Clinical Trial

Comparative clinical study of enamel antagonist wear opposing CAD-CAM all-ceramic crowns: A Randomized Clinical Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20220609001
Enrollment
30
Registered
2022-06-09
Start date
2019-06-04
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Overall general health that is good, without any contraindications regarding dental treatment. wear enamel CAD-CAM zirconia lithium disilicate In vivo

Interventions

group of patients who were received the zirconia crown,group of patients who were received the lithium disilicate glass-ceramic crown
Basic Science,Basic Science
Zirconia group,Lithium disilicate group

Sponsors

Mahidol University Faculty of Dentistry Grant
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Age of 18 years or older. 2. Overall general health that is good, without any contraindications regarding dental treatment. 3. Not having any present temporomandibular disorders or parafunctional habits. 4. First molar endodontically treated tooth with full crown needed and a minimum 1:1 crown-to-root ratio. 5. Healthy natural opposed antagonists not having crowns as well as two natural contralateral antagonistic molars, also not having crowns. Filling natural teeth will be allowed if at least one occlusal contact point is enamel. 6. Saliva flow that is not abnormal. 7. Willing and able to participate at any time as required.

Exclusion criteria

Exclusion criteria: 1. Systemic disease that is not well-controlled. 2. Poor plaque control or long-term periodontitis that has not been treated. 3. Active tooth decay, acute infection or periapical lesion. 4. Teeth that cannot be restored or teeth that can be restored but with a crown-to-root ratio that exceeds 1:1. 5. Evidence of temporomandibular disorders or parafunctional habits. 6. Insufficient volume or rate of flow of saliva, or a need for medications that reduce the salivary flow.

Design outcomes

Primary

MeasureTime frame
Wear of antagonist enamel at 24 months after end of the intervention Mean of volume loss and vertical loss

Secondary

MeasureTime frame
Wear of crown at 24 months after end of the intervention Mean of volume loss and vertical loss

Countries

Thailand

Contacts

Public ContactChuchai Anunmana

Department of Prosthodontics, Faculty of Dentistry, Mahidol University

chuchai.anu@mahidol.edu6622007816

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026