Wear Characteristics and Clinical Performance of Lithium Silicate Versus Monolithic Zirconia Crowns.

• Register: ClinicalTrials.gov
• Last refreshed on: 12 December 2020
• Main ID: NCT03530020
• Date of registration: 07/05/2018
• Prospective Registration: Yes
• Primary sponsor: Cairo University
• Public title: Wear Characteristics and Clinical Performance of Lithium Silicate Versus Monolithic Zirconia Crowns.
• Scientific title: Wear Characteristics and Clinical Performance of Lithium Silicate Versus Monolithic Zirconia Crowns. (Randomized Controlled Clinical Trial)
• Date of first enrolment: February 1, 2019
• Target sample size: 22
• Recruitment status: Not yet recruiting
• URL: https://clinicaltrials.gov/show/NCT03530020
• Study type: Interventional
• Study design: Allocation: Randomized. Intervention model: Parallel Assignment. Primary purpose: Treatment. Masking: Double (Participant, Outcomes Assessor).
• Phase: N/A

Countries of recruitment

Egypt

Contacts

• Name: Rasmia M salem, msc

• Name: rasmia salem, msc

Key inclusion & exclusion criteria

Inclusion Criteria:

- All subjects are required to be:

1. Age range of the patients from 21-50 years old; able to read and sign the
informed consent document, illiterate patient will be avoided.

2. Patients able physically and psychologically to tolerate conventional restorative
procedures.

3. Patients with no active periodontal or pulpal diseases, having teeth with good
restorations.

4. Patients with teeth problems indicated for full coverage restoration (e.g.
moderate to severe discoloration, coronal fracture where partial coverage would
lack retention, malposed or malformed teeth).

5. Patients with root canal treated teeth requiring full coverage restorations.

6. Presence of an opposing natural tooth which is non-restored or minimally
restored. (Minimally restored is defined as teeth which have no restoration
greater than a Class II a restoration)

7. The opposing arch doesn't have a full coverage restoration or a partial denture.

8. Patients willing to return for follow-up examinations and evaluation.

Exclusion Criteria:

1. Patients with poor oral hygiene.

2. Patients with psychiatric problems or unrealistic expectation (patient that has
phobia from dental treatments or needle bunch).

3. Patients have no opposite occluding dentition in the area intended for
restoration

4. Patients suffer from Para functional habits or temporomandibular disorders. (as
those patient may have wear which will affect the results)



Age minimum: 21 Years
Age maximum: 50 Years
Gender: All

Health Condition(s) or Problem(s) studied

Enamel and Ceramics Wear

Intervention(s)

Other: lithium silicate crowns

Other: monolithic zirconia crowns

Primary Outcome(s)

color matching [Time Frame: 12 month]

Wear of all ceramic crowns and color matching [Time Frame: 12 month]

Secondary Outcome(s)

gingival condition [Time Frame: 12 month]

Marginal adaptation [Time Frame: 12 month]

Wear of enamel antagonist to all ceramic crowns [Time Frame: 12 month]

anatomic form [Time Frame: 12 month]

integrity of restoration [Time Frame: 12 month]

opposing tooth sensitivity [Time Frame: 12 month]

retention [Time Frame: 12 month]

secondary caries [Time Frame: 12 month]

periodontal condition [Time Frame: 12 month]

Secondary ID(s)

enamel and ceramics wear

Source(s) of Monetary Support

Please refer to primary and secondary sponsors