Evaluation of a New Design of Crowns in the Posterior Teeth
Evaluation of IPS E.Max-CAD Endocrown in Molars Compared to the Conventional Design
Background: no randomized controlled trial has tried to compare treatment outcomes between the IPS.emmax endocrowns and the IPS.emmax conventional crowns .
Objective: to investigate the clinical performance of the IPS.emmax endocrowns and the IPS.emmax conventional crowns Design and setting: Parallel-groups randomized controlled trial on patients with one or more intensive damaged molars requiring crowning and being treated at the University of Damascus, Dental School in Damascus, Syria .All molars will be examined at the baseline assessment using a modified US Public Health Service (USPHS) criteria.
Participants: Incoming patients to the Fixed Prosthetic and Endodontic Departments will be examined to find any excessively damaged molars requiring crowning. Forty patients will be recruited according to specific inclusion criteria. Randomization will be performed using computer-generated tables; allocation will be concealed using sequentially numbered opaque and sealed envelopes.The included 40 patients will be analyzed (age range between 20-60 years). They will be randomly distributed into two groups with 20 patients in each group (1:1 allocation ratio).
Intervention: Excessively damaged and endodontically treated molars will be restored with IPS.emmax endocrowns or IPS.emmax crowns supported with composite core.
Main outcome measure: marginal adaptation and anatomic form will be investigated clinically and by apical radiographs at the baseline assessment using the modified (USPHS) at six assessment times during an 18-month observation period.
Assessor blinding will be employed.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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-
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Damascus, Syrien Arabiske Republik, DM20AM18
- Department of Fixed Prosthodontics, University of Damsacus
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Damascus, Syrien Arabiske Republik, DM20AM18
- University of Damascus Dental School
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Patients between 20 to 60 years old
- Good oral hygiene
- Gingival index (GI) equal 0
- Plaque index (PI) equal 0 or 1
- Primary acceptation and commitment to the trail
Inclusion criteria of molars:
- Two remaining axial walls at least.
- 0.5 mm above the gingival line at least for damaged axial walls.
- Good endodontic treatment and apical seal
- First and second upper and lower molars only.
- Against teeth could be natural or crowned.
Exclusion Criteria:
- Patients with an open bite or cross bite.
- Bruxism
- Periodontitis
- Gingival hyperplasia
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Ingen indgriben: IPS.emmax crown
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Eksperimentel: IPS.emmax endocrown
Patients with excessively undermined and endodontically treated molars will receive the IPS.emmax endocrown as the restoration of choice.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Marginal Adaptation
Tidsramme: at 3 months (T1), 6 months (T2), 9 months (T3), 12 months (T4), 15 months (T5), and 18 months (T6) following application
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The presence of marginal adaptation means that the restoration margins cannot be distinguished, the probe cannot find a step between the margins and the surrounding tissue, and no discoloration visible.
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at 3 months (T1), 6 months (T2), 9 months (T3), 12 months (T4), 15 months (T5), and 18 months (T6) following application
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Change in the Anatomic Form
Tidsramme: at 3 months (T1), 6 months (T2), 9 months (T3), 12 months (T4), 15 months (T5), and 18 months (T6) following application
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The anatomic form is considered satisfactory when the crown has a correct contour with tight proximal contact, no worn facets on restorations and no worn facets on opposing teeth.
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at 3 months (T1), 6 months (T2), 9 months (T3), 12 months (T4), 15 months (T5), and 18 months (T6) following application
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in the Retention Status
Tidsramme: at 3 months (T1), 6 months (T2), 9 months (T3), 12 months (T4), 15 months (T5), and 18 months (T6) following application
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Retention loss is considered when the crown becomes loose or mobile.
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at 3 months (T1), 6 months (T2), 9 months (T3), 12 months (T4), 15 months (T5), and 18 months (T6) following application
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Rana Dallool, DDS, University of Damascus Dental School
Publikationer og nyttige links
Generelle publikationer
- Bernhart J, Brauning A, Altenburger MJ, Wrbas KT. Cerec3D endocrowns--two-year clinical examination of CAD/CAM crowns for restoring endodontically treated molars. Int J Comput Dent. 2010;13(2):141-54. English, German.
- Biacchi GR, Basting RT. Comparison of fracture strength of endocrowns and glass fiber post-retained conventional crowns. Oper Dent. 2012 Mar-Apr;37(2):130-6. doi: 10.2341/11-105-L. Epub 2011 Sep 26.
- Bindl A, Mormann WH. Clinical evaluation of adhesively placed Cerec endo-crowns after 2 years--preliminary results. J Adhes Dent. 1999 Autumn;1(3):255-65.
- Fischer H, Marx R. Fracture toughness of dental ceramics: comparison of bending and indentation method. Dent Mater. 2002 Jan;18(1):12-9. doi: 10.1016/s0109-5641(01)00005-7.
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- UDDS-FixPro-01-2014
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