Immediate Implants With Customized Abutments

Study Overview
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Brief Summary
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Tooth extraction is followed by marked alterations of the tissue volume. The resorption process of at least the surrounding mucosa can be altered by using immediate implant placement and additional features such as immediate provisional crown, platform switching and grafting the gap between implant and buccal bone plate. The support of the gingival margin with a provisional crown led to an increase of buccal gingival tissue. Teeth scheduled for extraction will be used to study the effect of a customized healing abutment. The following groups will be randomly assigned: Control: A commercially available healing abutment will be screwed on top of the implant and a collagen sponge will be used to protect the graft. Test: A customized PEEK abutment mimicking the subgingival emergence of the extracted tooth will be screw retained on top of the implant to seal the extraction site.

Detailed Description
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Tooth extraction is followed by marked alterations of the tissue volume. Incorporation of biomaterials into a fresh extraction socket can significantly reduce alveolar resorption but is not able to diminish the biologic process of the buccal bone plate. The resorption process of at least the surrounding mucosa can be altered by using immediate implant placement and additional features such as immediate provisional crown, platform switching and grafting the gap between implant and buccal bone plate. The support of the gingival margin with a provisional crown led to an increase of buccal gingival tissue. Platform switching seems to be a viable option to reduce interproximal bone level alterations and to limit the buccal soft tissue recession. Furthermore, augmenting the defect between the implant and the buccal bone plate has been proven to reduce the resorption process and lead to less shrinkage. The primary objective is: - The implant success The Secondary objectives are: The Changes in mid-facial mucosal recession The changes in papilla height The changes in soft tissue ridge width The aesthetic evaluation The implant stability

Official Title
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Effect of Peri-implant Gap Grafting and Immediate Provisionalization With Customized Healing Abutments on the Stability of Peri-implant Soft Tissues - a Randomized Clinical Trial

Conditions
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Edentulous Alveolar Ridge Atrophy

Intervention / Treatment
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* Device: Immediate post-extractive Implant placement


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria:• The patient is ≥ 18 years old Extraction of single rooted tooth with healthy adjacent teeth (PD<5mm, no BOP) Patient must be able to understand the purpose of the study and to sign the consent form Exclusion Criteria: Smoking status of more than 10 cigarettes/day History of uncontrolled metabolic disorders (e.g. diabetes mellitus) History of malignancy, radiotherapy, or chemotherapy Pregnant or breast feeding History of immunodeficiences existence of metabolic bone disease or disease affecting bone healing untreated or active periodontitis (BOP and PD>5mm) absence or defects of the buccal bone plate

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Test: A customized PEEK abutment mimicking the subgingival emergence of the extracted tooth will be screw retained on top of the implant to seal the extraction site. Control: A commercially available healing abutment will be screwed on top of the implant and a collagen sponge will be used to protect the graft.
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Test group<br>A customized PEEK abutment mimicking the subgingival emergence of the extraction site will be screw-retained on the implant to seal the extraction site and to support healing of buccal soft tissues. | Device: Immediate post-extractive Implant placement<br>* Teeth scheduled for extraction will be used to study the effect of a customized healing abutment. All patients should receive prophylactic antibiotic therapy of 2g of amoxicillin (or clindamycin 600mg if allergic to penicillin) 1 hour before the surgery. Implant placed along the lingual/palatal bone plate and the implant platform should be placed at the level of the buccal bone plate. GUIDOR easy-graft CRYSTAL will be used to fill the defect between implant and buccal bone plate, subsequently, a standard healing abutment or a customized healing abutment will be screw-retained on the implants.<br>|
| Active Comparator: Control group<br>A commercially available healing abutment will be screwed on top of the implant and a collagen sponge will be used to protect the graft. | Device: Immediate post-extractive Implant placement<br>* Teeth scheduled for extraction will be used to study the effect of a customized healing abutment. All patients should receive prophylactic antibiotic therapy of 2g of amoxicillin (or clindamycin 600mg if allergic to penicillin) 1 hour before the surgery. Implant placed along the lingual/palatal bone plate and the implant platform should be placed at the level of the buccal bone plate. GUIDOR easy-graft CRYSTAL will be used to fill the defect between implant and buccal bone plate, subsequently, a standard healing abutment or a customized healing abutment will be screw-retained on the implants.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Implant success | Evaluated according to the criteria of Albrektsson et al. (1986): the implant is immobile when tested clinically Radiography does not demonstrate evidence of peri-implant radiolucency Bone loss that is less than 0.2 mm annually after the implant's first year of service No pain, discomfort or infection | 1 year of follow up | 
| Peri-implant marginal bone level- Radiographic Measurements | Peri-implant bone level will be assessed based on individual peri-apical x-rays performed at baseline, after implant placement, at the time of final impression at 90 days and after insertion of the definitive crown after 160 days using an individualized impression tray with resin imprints and at 1, 2, 3 years of follow up. The radiographic measurements will be performed by an independent evaluator, who will be unware of the assigned treatment. | 1 year of follow up | 
| Peri-implant marginal bone level- Radiographic Measurements | Peri-implant bone level will be assessed based on individual peri-apical x-rays performed at baseline, after implant placement, at the time of final impression at 90 days and after insertion of the definitive crown after 160 days using an individualized impression tray with resin imprints and at 1, 2, 3 years of follow up. The radiographic measurements will be performed by an independent evaluator, who will be unware of the assigned treatment. | 2 years of follow up | 
| Peri-implant marginal bone level- Radiographic Measurements | Peri-implant bone level will be assessed based on individual peri-apical x-rays performed at baseline, after implant placement, at the time of final impression at 90 days and after insertion of the definitive crown after 160 days using an individualized impression tray with resin imprints and at 1, 2, 3 years of follow up. The radiographic measurements will be performed by an independent evaluator, who will be unware of the assigned treatment. | 3 years of follow up | 
| Implant success | Evaluated according to the criteria of Albrektsson et al. (1986): the implant is immobile when tested clinically Radiography does not demonstrate evidence of peri-implant radiolucency Bone loss that is less than 0.2 mm annually after the implant's first year of service No pain, discomfort or infection | 2 years of follow up | 
| Implant success | Evaluated according to the criteria of Albrektsson et al. (1986): the implant is immobile when tested clinically Radiography does not demonstrate evidence of peri-implant radiolucency Bone loss that is less than 0.2 mm annually after the implant's first year of service No pain, discomfort or infection | 3 years of follow up | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Changes in mid-facial mucosal recession | The height of the mid-facial mucosa will be measured using the drilling template at baseline before tooth extraction after implant placement at day 45±5 (wound healing day 160±5 (primary endpoint - impression for final restoration) and at 1, 2, 3 years of follow up. Changes of mid-facial mucosal recession will be drawn by subtracting the post-op measurements from the baseline measurements. | 1 year of follow up | 
| Changes in mid-facial mucosal recession | The height of the mid-facial mucosa will be measured using the drilling template at baseline before tooth extraction after implant placement at day 45±5 (wound healing day 160±5 (primary endpoint - impression for final restoration) and at 1, 2, 3 years of follow up. Changes of mid-facial mucosal recession will be drawn by subtracting the post-op measurements from the baseline measurements. | 2 years of follow up | 
| Changes in mid-facial mucosal recession | The height of the mid-facial mucosa will be measured using the drilling template at baseline before tooth extraction after implant placement at day 45±5 (wound healing day 160±5 (primary endpoint - impression for final restoration) and at 1, 2, 3 years of follow up. Changes of mid-facial mucosal recession will be drawn by subtracting the post-op measurements from the baseline measurements. | 3 years of follow up | 
| Changes in papilla height | Height of the mesial and distal papilla will be assessed by measuring the distance between the incisal edge and the tip of the papilla using a caliper to the nearest 0.5mm before tooth extraction, after implant placement 45±5 during wound healing and at the time of final impression at 90±5 days, at 160±14 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. Papilla height changes will be assessed by subtracting post-op measurements from baseline measurements before tooth extraction or after implant placement. | 1 year of follow up | 
| Changes in papilla height | Height of the mesial and distal papilla will be assessed by measuring the distance between the incisal edge and the tip of the papilla using a caliper to the nearest 0.5mm before tooth extraction, after implant placement 45±5 during wound healing and at the time of final impression at 90±5 days, at 160±14 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. Papilla height changes will be assessed by subtracting post-op measurements from baseline measurements before tooth extraction or after implant placement. | 2 years of follow up | 
| Changes in papilla height | Height of the mesial and distal papilla will be assessed by measuring the distance between the incisal edge and the tip of the papilla using a caliper to the nearest 0.5mm before tooth extraction, after implant placement 45±5 during wound healing and at the time of final impression at 90±5 days, at 160±14 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. Papilla height changes will be assessed by subtracting post-op measurements from baseline measurements before tooth extraction or after implant placement. | 3 years of follow up | 
| Changes in soft tissue ridge width - Volumetric measurements | Digital scans of the implant region will be obtained at baseline before tooth extraction and after implant placement, at day 45±5 during wound healing of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 1 year of follow up | 
| Changes in soft tissue ridge width - Volumetric measurements | Digital scans of the implant region will be obtained at baseline before tooth extraction and after implant placement, at day 45±5 during wound healing of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 2 years of follow up | 
| Changes in soft tissue ridge width - Volumetric measurements | Digital scans of the implant region will be obtained at baseline before tooth extraction and after implant placement, at day 45±5 during wound healing of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 3 years of follow up | 
| Aesthetic evaluation (PES) | Pink esthetic score will be assessed on photographic images the tooth after final restoration and the insertion of the definitive crown. The assessment will be performed by an independent evaluator unaware of the assigned treatment. | 1 year of follow up | 
| Aesthetic evaluation (PES) | Pink esthetic score will be assessed on photographic images the tooth after final restoration and the insertion of the definitive crown. The assessment will be performed by an independent evaluator unaware of the assigned treatment. | 2 years of follow up | 
| Aesthetic evaluation (PES) | Pink esthetic score will be assessed on photographic images the tooth after final restoration and the insertion of the definitive crown. The assessment will be performed by an independent evaluator unaware of the assigned treatment. | 3 years of follow up | 
| Implant stability (ISQ) | Implant stability will be assessed using a resonance frequency measurement device and assessing Implant Stability Quotient (ISQ) scores after implant placement, at the time of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 90 days after insertion of the definitive crown | 
| Implant stability (ISQ) | Implant stability will be assessed using a resonance frequency measurement device and assessing Implant Stability Quotient (ISQ) scores after implant placement, at the time of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 160 days after insertion of the definitive crown | 
| Implant stability (ISQ) | Implant stability will be assessed using a resonance frequency measurement device and assessing Implant Stability Quotient (ISQ) scores after implant placement, at the time of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 1 year of followup | 
| Implant stability (ISQ) | Implant stability will be assessed using a resonance frequency measurement device and assessing Implant Stability Quotient (ISQ) scores after implant placement, at the time of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 2 years of follow up | 
| Implant stability (ISQ) | Implant stability will be assessed using a resonance frequency measurement device and assessing Implant Stability Quotient (ISQ) scores after implant placement, at the time of final impression at 90 days, at 160 days after insertion of the definitive crown and at 1, 2, 3 years of follow up. | 3 years of follow up | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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immediate implants, immediate provvisional, soft tissue recession