Comparing Pro-Inflammatory Cytokines and Bone Metabolism Mediators Around Laser-Lok and Machined Transmucosal Abutments

Not Applicable

Completed

Brief Summary: A pilot, prospective, randomized clinical trial is proposed. It is primarily aimed at assessing the expression of pro-inflammatory cytokine and bone metabolism mediators adjacent to Laser-Lok microgrooved (LL) or machined (M) transmucosal healing abutments. The pilot study would seek recruitment of 12 subjects requiring replacement of a single, toothbound molar or premolar in the maxilla or mandible with an implant-supported restoration.

Detailed Description: The purpose of this research study is to compare two different implant abutment designs, microgrooved and machined. The implant abutment is the dental prosthetic part that connects the implant to the crown. As a part of this study, subjects will have a dental implant surgically placed in their jaw bone. The implant will serve as the artificial root. After the implant heals, subjects will have the abutment and crown placed on the implant.

This study will compare levels of inflammation next to the implant abutment. Both implant abutment designs are FDA approved but differ in microtexturing. This study will determine if these texture differences have any impact on the healing of subjects' jaw bone and gums after implant surgery.

Recruitment & Eligibility

Inclusion Criteria

18 years of age or greater
Subjects requiring the replacement of either a tooth-bound molar or premolar in either arch that do not require simultaneous implant site development (i.e., bone and/or soft-tissue grafting)
Teeth adjacent (mesial and distal) to study site must consist of two stable, natural teeth without signs of periodontal attachment loss up to 2.0mm
An opposing dentition with teeth, implants, or fixed prosthesis
Subjects must be willing to forgo use of a provisional appliance (e.g., removable interim partial denture (or) "flipper", essix appliance, etc.) during the active portion (from implant placement to 8 week +IP visit) of the study protocol.
Subjects must be willing to follow instructions related to the study procedures
Subjects must have read, understood, and signed the informed consent document

Exclusion Criteria

Insufficient interocclusal space for implant placement and/or restoration at study site
Insufficient lateral ridge volume for implant placement in a prosthetically-driven location
More than 2.0 mm of vertical bone loss at study site as measured from the interproximal crestal bone on the adjacent teeth
Untreated rampant caries
Tobacco use free for ≤ 6 months
Liver or kidney dysfunction/failure
Active severe infectious diseases that may affect normal healing and/or bone metabolism
Uncontrolled diabetes determined as HbA1c value > 7%
Current alcohol or drug abuse
Need for systemic medications (e.g., corticosteroids) that may influence postoperative healing and/or osseointegration
History of relevant head/neck cancer and/or radiation of the head/neck within the last 24 months
Subjects who currently use IV bisphosphonates or have a history of IV bisphosphonate use
Subjects with metabolic bone diseases such as severe osteoporosis or Paget's disease of bone
Known pregnancy or nursing mothers
Unwilling to forgo use of a provisional appliance (e.g., removable interim partial denture (or) "flipper", essix appliance, etc.) during the active portion (from implant placement to 8 week +IP visit) of the study protocol.
Unable or unwilling to return for follow-up visits for a period of 1 year
Unlikely to be able to comply with study procedures according to investigators judgement

Arm && Interventions

Group	Intervention	Description
Laser-Lok	Laser-Lok	A Laser-Lok microgrooved implant will be placed.
Machine	Machined	A machined implant will be placed.

Primary Outcome Measures

Name	Time	Method
Difference in GCF Cytokine Levels (Log pg/ml) for Various Biomarkers, Specifically at Laser-Lok Abutment Sites and Machined Abutment Sites at 8 Weeks After Implant Placement	8 weeks after implant placement	Determine if there is a difference in gingival crevicular fluid's pro-inflammatory and bone-metabolism mediator profiles, specifically for gingival crevicular fluid that is next to Laser-Lok microgrooved abutments (LL) and machined (M) habutments after a healing period of 8 weeks after implant placement.
Difference in PICF Cytokine Levels (Log pg/ml) for Various Biomarkers, Specifically at Laser-Lok Abutment Sites and Machined Abutment Sites at 8 Weeks After Implant Placement	8 weeks after implant placement	Determine if there is a difference in peri-implant crevicular fluid's pro-inflammatory and bone-metabolism mediator profiles, specifically for peri-implant crevicular fluid that is next to Laser-Lok microgrooved (LL) and machined (M) healing abutments after a healing period of 8 weeks after implant placement.

Secondary Outcome Measures