Marginal Integrity and Clinical Evaluation of Polyetheretherketone (PEEK) Versus Lithium Disilicate (E-max) Endocrowns.

Cairo University (CU)

Status

Unknown

Conditions

Endodontically Treated Teeth

Treatments

Other: PEEK

Other: Emax

Study type

Interventional

Funder types

Other

Identifiers

NCT04023357

emax_peek

Details and patient eligibility

About

Patients need Endocrowns for their teeth usually use Emax as an etchable ceramic. Yet they have disadvantages that may influence the outcome of the endocrowns, among which is the high stiffness and rigidity owing to the higher modulus of elasticity (67.2 GPa)( compared to natural dentin (18.6 GPa) which may affect the marginal adaptation.so a less rigid material is needed. PEEKs (polyetheretherketones) are presented as alternative materials to metal and glass ceramics, Their elastic modulus comparable to those of cortical bone and dentin so the polymer could exhibit good stress distribution. Also they have high fracture resistance, and low abrasion to the antagonist enamel.

.but the investigators have to know clinically it is performance , so the investigators are going to have Parallel groups in a randomized clinical trial.

Enrollment

22 estimated patients

Sex

All

Ages

18 to 60 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

All subjects are required to be:

From 18-60 years old, and able to read and sign the informed consent document.
Physically and psychologically able to tolerate conventional restorative procedures
Have no active periodontal or pulpal diseases.
Willing to return for follow-up examinations and evaluation

Exclusion criteria

Patients in the growth stage with partially erupted teeth
Patient with fractured teeth of more than 50% enamel loss
Patients with poor oral hygiene and motivation
Pregnant women
Psychiatric problems or unrealistic expectations
Lack of opposite occluding dentition in the area intended for restoration

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

22 participants in 2 patient groups

PEEK

Experimental group

Description:

PEEKs (polyetheretherketones) are presented as alternative materials to metal and glass ceramics,1 Their elastic modulus comparable to those of cortical bone and dentin so the polymer could exhibit good stress distribution. Also they have high fracture resistance, and low abrasion to the antagonist enamel. Yet clinical studies are needed to evaluate their clinical performance.

Treatment:

Other: PEEK

Emax

Active Comparator group

Description:

lithium disilicate glass-ceramic which is etchable and proved to have good success rate if used for Endocrowns

Treatment:

Other: Emax