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Multicenter Clinical Study on the Efficacy and Esthetic Outcomes of Immediate Implant Placement Using the Socket-Shield Technique Versus Conventional Immediate Implantation in the Anterior Maxillary Esthetic Zone

11. september 2026 opdateret af: Xi Ding, First Affiliated Hospital of Wenzhou Medical University
This study plans to enroll no fewer than 48 adult patients who have non-restorable maxillary anterior teeth due to trauma or dental diseases and are candidates for immediate implant placement, meeting the inclusion and exclusion criteria.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This is a prospective, multicenter, parallel-group, evaluator-blinded randomized controlled trial.It aims to compare the Socket Shield Technique (SST) with conventional immediate implant placement (IIP) in the maxillary anterior aesthetic zone, evaluating labial bone plate thickness, implant survival/success rates, pink aesthetics, and patient satisfaction to assess their clinical efficacy and aesthetic outcomes.

Eligible participants will provide informed consent and be randomly assigned to groups via center-stratified randomization.

Primary endpoint: Changes in buccal bone plate thickness at the implant shoulder and at 2, 4, and 6 mm apically at 6 months after prosthetic restoration (T3).

Secondary endpoints: Implant survival and success rates; changes in buccal bone volume; changes in soft tissue contour convexity; Pink Esthetic Score (PES); patient satisfaction; operative time, pain levels, and treatment-related parameters.

Safety endpoints: Intraoperative and postoperative adverse events, including infection, bleeding, wound dehiscence, implant loosening, peri-implantitis, shield fragment displacement/exposure/dislodgement, need for reoperation, and other serious adverse events (SAEs).

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

48

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

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:

  • Age: 18 to 65 years old;

    • Good general health, able to tolerate oral implant surgery, with no absolute surgical contraindications (ASA I or II);

      • Clinical diagnosis of an unrestorable maxillary anterior tooth, suitable for immediate implant placement; ④ Periodontal tissues are basically healthy, with no obvious active infection in the apical area; ⑤ No obvious root fracture on the labial/buccal side or severe mobility preoperatively; radiographic evaluation confirms that the bone volume in the surgical site meets the requirements of the protocol; ⑥ Willing to accept randomization and standardized follow-up, and has signed the Informed Consent Form; ⑦ Able to provide complete intraoral photographs, CBCT (Cone Beam Computed Tomography) scans, and follow-up data.

Exclusion Criteria:

  • Presence of severe systemic diseases that may affect the surgery or healing, or current use of related medications such as bisphosphonates;

    • Severe periodontal disease or uncontrolled poor oral hygiene;

      • Obvious inflammation in the apical area of the affected tooth, or pathological root resorption; ④ Abnormal occlusal relationship, obvious bruxism, or inability to establish a stable restorative occlusion;

        • Pregnancy or lactation, or unsuitability for radiographic examination; ⑥ History of previous surgery or radiotherapy affecting the bone volume or soft tissues in the target area, which the investigator deems would seriously interfere with the evaluation; ⑦ Expected inability to complete the follow-up, or refusal to comply with the study requirements.

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: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: the Socket Shield Technique (SST)
the Socket Shield Technique (SST) immediate implant placement

During tooth extraction, a stable buccal root fragment (shield) is preserved. The specific procedures are as follows:

Minimally invasively extract the crown of the affected tooth, preserving a buccal root fragment approximately 1-2 mm in thickness; Adjust the coronal aspect of the root fragment to approximately 2 mm apical to the gingival margin, ensuring a rounded and blunt coronal edge that is flush with the alveolar crest; Maintain the integrity of the buccal bone plate without any fractures;

Andre navne:
  • Group SST
Aktiv komparator: conventional immediate implant placement (IIP)

Completely remove the root of the affected tooth and complete the procedure according to the conventional immediate implant placement protocol:

Minimally invasively extract the affected tooth (complete root extraction); Place the implant within the extraction socket (biased toward the palatal side); Fill the jump gap with a low-resorption xenogeneic bone substitute material; Perform soft and hard tissue management according to the conventional immediate implant placement SOP.

Andre navne:
  • Group IIP

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Thickness of the labial bone plate
Tidsramme: 6 months after the restoration (T3)
The changes in the thickness of the labial bone plate at the implant shoulder and 2, 4, and 6 mm below
6 months after the restoration (T3)

Sekundære resultatmål

Resultatmål
Tidsramme
Implant retention and success rate
Tidsramme: 3, 6,12 ,24 and 36 months after the operaiton
3, 6,12 ,24 and 36 months after the operaiton
Volume change of the labial bone plate
Tidsramme: 6 months after the crown restoration was completed
6 months after the crown restoration was completed
Change in the contour curvature of soft tissues
Tidsramme: 6 months after the crown restoration was completed
6 months after the crown restoration was completed
Pink Aesthetic Score (PES)
Tidsramme: 6 months after the crown restoration was completed
6 months after the crown restoration was completed
Patients' satisfaction degree
Tidsramme: On the day after the surgery, the day of crown restoration completion, and 6 months after the restoration was completed
On the day after the surgery, the day of crown restoration completion, and 6 months after the restoration was completed

Samarbejdspartnere og efterforskere

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

Sponsor

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 (Anslået)

1. januar 2027

Primær færdiggørelse (Anslået)

31. december 2028

Studieafslutning (Anslået)

31. december 2029

Datoer for studieregistrering

Først indsendt

11. september 2026

Først indsendt, der opfyldte QC-kriterier

11. september 2026

Først opslået (Faktiske)

16. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

16. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

11. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • KY2026-421

Plan for individuelle deltagerdata (IPD)

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INGEN

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