A study to compare wear of two different crown materials and natural teeth

Comparative evaluation of occlusal wear of polished CAD CAM fabricated translucent zirconia, polished heat pressed lithium disilicate crowns and natural antagonist enamel – a split mouth pilot study - NIL

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2024/01/061842

Enrollment

Registered

2024-01-25

Start date

Unknown

Completion date

Unknown

Last updated

2024-03-04

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

Conditions

Health Condition 1: K030- Excessive attrition of teeth

Interventions

Intervention1: Endodontically treated teeth restored with lithium disilicate crown: Tooth preparation done in endodontically treated mandibular 1st molar and cemented with lithium disilicate crown and

Eligibility

Inclusion criteria

Inclusion criteria: 1.Patients requiring bilateral posterior maxillary or mandibular complete crowns. 2.Teeth selected for zirconia crown preparation should be restorable with a minimum crown to root ratio of at least 1:1. 3.Teeth with healthy opposing natural teeth. 4.Patients with good oral hygiene and periodontal status. 5.Patients with full complement of teeth (excluding 3rd molars). 6.Patients who will be available for the required follow up period. 7.Patients giving positive informed consent. 8.Patient in age group 18-45 years will be enrolled

Exclusion criteria

Exclusion criteria: 1.Patients with developmental defects of enamel and dentin. 2.Parafunctional habits like bruxism, clenching. 3.Temporomandibular joint disorders. 4.Patients with fluorosis, calcium metabolic disorders, osteoporosis. 5.Opposing teeth with caries or wear 6.Patients having malocclusion

Design outcomes

Primary

Measure	Time frame
To evaluate the occlusal wear of polished translucent zirconia and polished heat pressed lithium disilicate crowns by natural antagonistic teeth in micro meters 2.To evaluate the occlusal wear of natural antagonistic enamel by polished translucent zirconia and polished heat pressed lithium disilicate crowns in micro meters Timepoint: 24 hours after cementation and 1 year after cementation of crown	—

Measure

Time frame

To evaluate the occlusal wear of polished translucent zirconia and polished heat pressed lithium disilicate crowns by natural antagonistic teeth in micro meters 2.To evaluate the occlusal wear of natural antagonistic enamel by polished translucent zirconia and polished heat pressed lithium disilicate crowns in micro meters Timepoint: 24 hours after cementation and 1 year after cementation of crown

—

Secondary

Measure	Time frame
1.To evaluate the occlusal wear of natural enamel antagonistic with natural enamel(control). 2.To compare the wear of polished translucent zirconia, polished lithium disilicate crowns, and natural enamel with each other and with control. Timepoint: 24 hours after cementation and 1 year after cementation of crown	—

Countries

India

Contacts

Public ContactPoovitha M

All India Institute of Medical Sciences New Delhi

jainveena1@gmail.com9868187441

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026