Evaluation of Full Veneered Porcelain-Fused-to-Metal Crowns Cemented With Self-Adhesive Resin Cement Using Two Curing Modes

Evaluation of Full Veneered Porcelain-Fused-to-Metal Crowns Cemented With Self-Adhesive Resin Cement Using Two Curing Modes: A Randomized Clinical Trial

Status

Recruiting

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT07043998

Enrollment

Registered

2025-06-29

Start date

2025-05-15

Completion date

2027-06-15

Last updated

2025-06-29

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

Conditions

Restoration of Posterior Tooth

Brief summary

P - Population/Patient Problem Adult patients requiring full coverage porcelain-fused-to-metal (PFM) crown restorations I - Intervention PFM crowns veneered with porcelain system cemented using self-adhesive resin cement in DUAL-CURED mode (light-cured for 20 seconds per surface) C - Comparison PFM crowns veneered with porcelain system cemented using self-adhesive resin cement in SELF-CURED mode (no light curing, 5 minutes self-cure) O - Outcome(s) * Primary: Retention of PFM crowns (Modified USPHS criteria) * Secondary: Marginal adaptation, recurrent caries, marginal discoloration (Modified USPHS criteria) T - Time 18-month follow-up period with evaluations at baseline, 6, 12, and 18 months

Interventions

OTHERSelf-adhesive resin cement in SELF-CURED mode

PFM crowns veneered with porcelain system cemented using self-adhesive resin cement in SELF-CURED mode

OTHERSelf-adhesive resin cement in DUAL-CURED mode

PFM crowns veneered with porcelain system cemented using self-adhesive resin cement in DUAL-CURED mode

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

21 Years to No maximum

Healthy volunteers

Inclusion criteria

1. Adult patients requiring full coverage PFM crown restorations 2. Age ≥ 21 years 3. Vital or endodontically treated teeth 4. Sufficient tooth structure for crown retention 5. Willing and able to provide written informed consent 6. Ability to attend all follow-up appointments 7. Adequate oral hygiene as determined by the investigator

Exclusion criteria

1. Patients with active periodontal disease (probing depth \> 4mm, bleeding on probing) 2. Patients with severe parafunctional habits (e.g., bruxism confirmed by clinical examination) 3. Poor oral hygiene (plaque index \> 30%) 4. Pregnancy or nursing 5. Systemic diseases affecting treatment outcomes (e.g., uncontrolled diabetes, immunosuppression) 6. Known allergies to study materials (metal alloys, porcelain, or resin cement components) 7. Inability to comply with study requirements 8. Current participation in other dental clinical trials 9. Active orthodontic treatment

Design outcomes

Primary

Measure	Time frame	Description
Retention of PFM crowns	18 months	Modified USPHS criteria (Scores)

Secondary

Measure	Time frame	Description
Marginal adaptation	18 months	Modified USPHS criteria ( scores)
Recurrent caries	18 months	Modified USPHS criteria ( scores)
Marginal discoloration	18 months	Modified USPHS criteria ( scores)

Countries

Egypt

Contacts

Primary ContactOmnia Nabil, Associate Professor

omnianabil@dentistry.cu.edu.eg+201222201179

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026