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Cover Screw vs Healing Abutment on Osseointegration

30. juni 2026 opdateret af: Zeliha Başak Çakır Erdil

EFFECTS OF COVER SCREW AND HEALING ABUTMENT ON EARLY IMPLANT STABILITY: A RANDOMIZED CONTROLLED CLINICAL TRIAL

This randomized split-mouth clinical trial aims to compare the effects of using a cover screw versus a healing abutment on early implant stability and osseointegration. Patients requiring at least two dental implants will receive both interventions in a split-mouth design, with one implant randomly assigned to the cover screw group and the contralateral implant assigned to the healing abutment group. Implant stability will be assessed using resonance frequency analysis (RFA) and Implant Stability Quotient (ISQ) measurements during the healing period.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This prospective randomized split-mouth controlled clinical trial evaluates the effects of cover screw placement and healing abutment placement on early implant stability and osseointegration. Systemically healthy patients requiring at least two dental implants will be enrolled. Using a split-mouth design, each participant will receive both interventions, with one implant randomly allocated to receive a cover screw (two-stage protocol) and the contralateral implant to receive a healing abutment (one-stage protocol).

Implant stability will be evaluated by insertion torque and resonance frequency analysis (RFA). Implant Stability Quotient (ISQ) values will be recorded at implant placement and at the 3-month follow-up. The primary objective is to compare changes in implant stability (ΔISQ) between the two treatment protocols. Secondary outcomes include implant survival, peri-implant soft tissue healing, and postoperative complications.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

50

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Merkez
      • Adıyaman, Merkez, Tyrkiet (Türkiye), 02030
        • Faculty of Dentistry, Adıyaman University

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Adults aged ≥18 years. American Society of Anesthesiologists (ASA) physical status I or II. Able and willing to comply with the study protocol and follow-up schedule. Required at least two dental implants in contralateral or symmetrical edentulous sites.

Implant sites free of active infection or acute periodontal disease. Adequate oral hygiene. Sufficient bone volume for placement of a standard-diameter implant with at least 1.5 mm of surrounding peri-implant bone.

Keratinized mucosal width ≥2 mm. Soft tissue thickness ≥2 mm. Written informed consent provided.

Exclusion Criteria:

  • Systemic diseases or medical conditions contraindicating implant surgery. Uncontrolled diabetes mellitus (HbA1c >10%). Current intravenous antiresorptive therapy. History of head and neck radiotherapy. Immunosuppressive therapy. Active malignancy. Uncontrolled hypertension. Advanced hepatic or renal insufficiency. Pregnancy. Poor oral hygiene. Active oral infection. Requirement for bone augmentation before implant placement. Inadequate bone volume. Unfavorable peri-implant soft tissue phenotype. Primary implant stability <20 Ncm at implant placement.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Healing Abutment
Dental implants were restored with a healing abutment at the time of implant placement using a one-stage surgical protocol. Implant stability and osseointegration were evaluated during the follow-up period.
A healing abutment was connected to the dental implant immediately after implant placement using a one-stage surgical protocol.
Aktiv komparator: Cover Screw
Dental implants were restored with a cover screw at the time of implant placement using a conventional two-stage surgical protocol. Implant stability and osseointegration were evaluated during the follow-up period.
A cover screw was connected to the dental implant immediately after implant placement using a conventional two-stage surgical protocol.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in Implant Stability Quotient (ISQ)
Tidsramme: Baseline (implant placement) to 3 months after implant placement
Implant stability was assessed using resonance frequency analysis (RFA). Changes in Implant Stability Quotient (ISQ) values from implant placement to the 3-month follow-up were compared between the healing abutment and cover screw groups.
Baseline (implant placement) to 3 months after implant placement

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Studieleder: METİN çalışır, Prof.Dr., Department of Periodontology, Faculty of Dentistry, Adıyaman University, Adıyaman, Turkey

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

26. februar 2025

Primær færdiggørelse (Faktiske)

24. marts 2026

Studieafslutning (Faktiske)

24. marts 2026

Datoer for studieregistrering

Først indsendt

30. juni 2026

Først indsendt, der opfyldte QC-kriterier

30. juni 2026

Først opslået (Faktiske)

7. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

7. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • HRU-25.04.15

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data will not be shared because of institutional policies and the need to protect participant confidentiality.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

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