An interventional study of the Socket Shield Technique (SST) immediate implant placement and Conventional immediate implant placement in Teeth Absent, Teeth Missing and Dental Implant, sponsored by First Affiliated Hospital of Wenzhou Medical University. Not yet recruiting. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-09-16.
Sponsored by First Affiliated Hospital of Wenzhou Medical University · Not applicable, Interventional, and Treatment
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.
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).
First Affiliated Hospital of Wenzhou Medical University is the lead sponsor of 83 studies on the registry; 57 are open to participants now.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Age: 18 to 65 years old;
Good general health, able to tolerate oral implant surgery, with no absolute surgical ();
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;
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
the Socket Shield Technique (SST) immediate implant placement
Procedure: the Socket Shield Technique (SST) immediate implant placement
Procedure: Conventional 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;
Also known as: Group SST
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.
Also known as: Group IIP
Thickness of the labial bone plate
The changes in the thickness of the labial bone plate at the implant shoulder and 2, 4, and 6 mm below
Time frame: 6 months after the restoration (T3)
Implant retention and success rate
Time frame: 3, 6,12 ,24 and 36 months after the operaiton
Volume change of the labial bone plate
Time frame: 6 months after the crown restoration was completed
Change in the contour curvature of soft tissues
Time frame: 6 months after the crown restoration was completed
Pink Aesthetic Score (PES)
Time frame: 6 months after the crown restoration was completed
Patients' satisfaction degree
Time frame: On the day after the surgery, the day of crown restoration completion, and 6 months after the restoration was completed
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
Start is estimated for Jan 2027; primary completion for Dec 2028, 23 months later.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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Anodontia
First Affiliated Hospital of Wenzhou Medical University