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| Name | Class |
|---|---|
| BioHorizons, Inc. | INDUSTRY |
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The purpose of this study is to determine which implant-abutment design is more likely to promote early soft-tissue healing processes and/or will enhance longitudinal peri-implant bone and soft-tissue health.
The study will assess the integrity of the peri-implant oral soft-tissue attachment to implant abutments by comparing tissue responses to a laser-ablated implant-abutment and an implant-abutment manufactured with a smooth surface.
Investigators will assess the initial post-surgical peri-implant attachment-seal and will test whether or not the tissue-abutment interface re-forms with equal integrity when the abutment is removed and replaced with a new abutment.
Data will include histological, radiographic, clinical, and subjective aesthetics to compare the effectiveness of two abutment designs. Both devices are supplied by the BioHorizons Implant Systems Inc. of Birmingham, Alabama; the abutments are analogous in design and material except the test device has a laser-ablated surface and the control abutment is smooth.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Laser-ablated dental implant-abutments | Experimental | Laser-ablated dental implant abutments will be attached to surgically placed dental implants. |
|
| Smooth implant-abutments | Active Comparator | Smooth dental implant-abutments will be attached to surgically placed dental implants. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dental implant-abutments | Device | At week-8, abutments will be removed and replaced with new Laser-Lok® abutments. An inter-arm randomization will assign subjects to one of two sub-groups per treatment arm. Sub-groups 1-a & 2-a: will receive a new Laser-Lok® abutment and a soft-tissue biopsy at week-8; a force-probe clinical attachment assessment of the same site will be delayed until week-16. Sub-groups 1-b & 2-b: will receive a new Laser-Lok® abutment and a force-probe clinical attachment assessment at week-8; a biopsy harvested from the same study site will be delayed until week-16. The implants will be restored following standard technique and a final visit will occur 6 months following permanent restoration. |
| Measure | Description | Time Frame |
|---|---|---|
| Number od Participants With Consistent Connective Tissue Integration at a Histologic Level | Connective tissue integration was assessed by radio graphic images of tissue and bone surrounding the implant. | 8 weeks post-abutment placement |
| Measure | Description | Time Frame |
|---|---|---|
| Grams of Force Needed to Disrupt Tissue Attachment to the Abutment | A force transducing periodontal probe instrument will electronically capture the grams of force needed to disrupt the attachment to the implant abutment; tissues will be probed from the gingival margin to the alveolar bone crest at 4 points around each abutment and an adjacent tooth: measurements will be captured from the mesial, buccal, distal, and lingual. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. |
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Inclusion Criteria:
Exclusion Criteria:
Full edentulism
Any chronic health condition or medication that in the opinion of the investigators may adversely affect bone healing
Any indication of an inability to make autonomous decisions
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| Name | Affiliation | Role |
|---|---|---|
| Michael S Reddy, DMD, DMSc | University of Alabama at Birmingham | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Alabama at Birmingham School of Dentistry | Birmingham | Alabama | 35294-0007 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 31535464 | Background | Geurs NC, Geisinger ML, Vassilopoulos PJ, O'Neal SJ, Haigh SJ, Reddy MS. Optimizing Connective Tissue Integration on Laser-Ablated Implant Abutments. Clin Adv Periodontics. 2016 Aug;6(3):153-159. doi: 10.1902/cap.2016.150068. |
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| ID | Title | Description |
|---|---|---|
| FG000 | Laser-ablated Dental Implant-abutments | Laser-ablated dental implant abutments will be attached to surgically placed dental implants. |
| FG001 | Smooth Implant-abutments | Smooth dental implant-abutments will be attached to surgically placed dental implants. |
| Title | Milestones | Reasons Not Completed | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
|
|
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| ID | Title | Description |
|---|---|---|
| BG000 | Laser-ablated Dental Implant-abutments | Laser-ablated dental implant abutments will be attached to surgically placed dental implants. Dental implant-abutments: At week-8, abutments will be removed and replaced with new Laser-Lok® abutments. An inter-arm randomization will assign subjects to one of two sub-groups per treatment arm. Sub-groups 1-a & 2-a: will receive a new Laser-Lok® abutment and a soft-tissue biopsy at week-8; a force-probe clinical attachment assessment of the same site will be delayed until week-16. Sub-groups 1-b & 2-b: will receive a new Laser-Lok® abutment and a force-probe clinical attachment assessment at week-8; a biopsy harvested from the same study site will be delayed until week-16. The implants will be restored following standard technique and a final visit will occur 6 months following permanent restoration. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Number od Participants With Consistent Connective Tissue Integration at a Histologic Level | Connective tissue integration was assessed by radio graphic images of tissue and bone surrounding the implant. | The number of participants entered represents measured data. | Posted | Number | participants | 8 weeks post-abutment placement |
|
Adverse event data was collected from time of enrollment, January 5, 2011 to close of study, September 12, 2014.
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Laser-ablated Dental Implant-abutments | Laser-ablated dental implant abutments will be attached to surgically placed dental implants. Dental implant-abutments: At week-8, abutments will be removed and replaced with new Laser-Lok® abutments. An inter-arm randomization will assign subjects to one of two sub-groups per treatment arm. Sub-groups 1-a & 2-a: will receive a new Laser-Lok® abutment and a soft-tissue biopsy at week-8; a force-probe clinical attachment assessment of the same site will be delayed until week-16. Sub-groups 1-b & 2-b: will receive a new Laser-Lok® abutment and a force-probe clinical attachment assessment at week-8; a biopsy harvested from the same study site will be delayed until week-16. The implants will be restored following standard technique and a final visit will occur 6 months following permanent restoration. |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Michael S. Reddy, DMD, DMSc | University of Alabama at Birmingham | 2059344720 | mreddy@uab.edu |
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| ID | Term |
|---|---|
| D007576 | Jaw, Edentulous, Partially |
| ID | Term |
|---|---|
| D007575 | Jaw, Edentulous |
| D007571 | Jaw Diseases |
| D009140 | Musculoskeletal Diseases |
| D009057 | Stomatognathic Diseases |
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| 8 weeks post-abutment placement |
| Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | 8 weeks post-abutment placement |
| Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | 12 weeks post-abutment placement |
| Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | 16 weeks post-abutment placement |
| Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | 12 month post-abutment placement |
| BG001 | Smooth Implant-abutments | Smooth dental implant-abutments will be attached to surgically placed dental implants. Dental implant-abutments: At week-8, abutments will be removed and replaced with new Laser-Lok® abutments. An inter-arm randomization will assign subjects to one of two sub-groups per treatment arm. Sub-groups 1-a & 2-a: will receive a new Laser-Lok® abutment and a soft-tissue biopsy at week-8; a force-probe clinical attachment assessment of the same site will be delayed until week-16. Sub-groups 1-b & 2-b: will receive a new Laser-Lok® abutment and a force-probe clinical attachment assessment at week-8; a biopsy harvested from the same study site will be delayed until week-16. The implants will be restored following standard technique and a final visit will occur 6 months following permanent restoration. |
| BG002 | Total | Total of all reporting groups |
| Participants |
|
| Gender | Count of Participants | Participants |
|
| OG001 | Smooth Implant-abutments | Smooth dental implant-abutments will be attached to surgically placed dental implants. Dental implant-abutments: At week-8, abutments will be removed and replaced with new Laser-Lok® abutments. An inter-arm randomization will assign subjects to one of two sub-groups per treatment arm. Sub-groups 1-a & 2-a: will receive a new Laser-Lok® abutment and a soft-tissue biopsy at week-8; a force-probe clinical attachment assessment of the same site will be delayed until week-16. Sub-groups 1-b & 2-b: will receive a new Laser-Lok® abutment and a force-probe clinical attachment assessment at week-8; a biopsy harvested from the same study site will be delayed until week-16. The implants will be restored following standard technique and a final visit will occur 6 months following permanent restoration. |
|
|
| Secondary | Grams of Force Needed to Disrupt Tissue Attachment to the Abutment | A force transducing periodontal probe instrument will electronically capture the grams of force needed to disrupt the attachment to the implant abutment; tissues will be probed from the gingival margin to the alveolar bone crest at 4 points around each abutment and an adjacent tooth: measurements will be captured from the mesial, buccal, distal, and lingual. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | No data was collected on subjects from the mesial, buccal, distal or lingual sites as sites were not assessed on subjects for reasons unknown. | Posted | 8 weeks post-abutment placement |
|
|
| Secondary | Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | No data was collected on subjects from the mesial, buccal, distal or lingual sites as sites were not assessed on subjects for reasons unknown. | Posted | 8 weeks post-abutment placement |
|
|
| Secondary | Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | No data was collected on subjects from the mesial, buccal, distal or lingual sites as sites were not assessed on subjects for reasons unknown. | Posted | 12 weeks post-abutment placement |
|
|
| Secondary | Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | No data was collected on subjects from the mesial, buccal, distal or lingual sites as sites were not assessed on subjects for reasons unknown. | Posted | 16 weeks post-abutment placement |
|
|
| Secondary | Mean Change in Millimeters of Clinical Attachment to the Abutment | A periodontal probe will be used to measure the level of clinical attachment to the abutment in millimeters. Measurements will be captured at 4 points around each abutment; mesial, buccal, distal, and lingual. All measurements were considered and the change in attachment level was assessed at each individual site. Data were reported as descriptive and were used to elucidate potential advantages and/or disadvantages of varying abutment types. These data were strictly confirmatory to the proof-in-principle histology presented in the report. Measures were taken at 8 weeks, 12 weeks, 16 weeks and 12 months to determine if attachment to one abutment type was more or less stable over time. The specific force probe generates a descriptive graph that demonstrates the cumulative force and distribution necessary to disrupt the attachment of the gingival tissues to the abutment. These graphs were recorded, but were difficult to interpret and have not been reported. | No data was collected on subjects from the mesial, buccal, distal or lingual sites as sites were not assessed on subjects for reasons unknown. | Posted | 12 month post-abutment placement |
|
|
| 0 |
| 10 |
| 0 |
| 10 |
| EG001 | Smooth Implant-abutments | Smooth dental implant-abutments will be attached to surgically placed dental implants. Dental implant-abutments: At week-8, abutments will be removed and replaced with new Laser-Lok® abutments. An inter-arm randomization will assign subjects to one of two sub-groups per treatment arm. Sub-groups 1-a & 2-a: will receive a new Laser-Lok® abutment and a soft-tissue biopsy at week-8; a force-probe clinical attachment assessment of the same site will be delayed until week-16. Sub-groups 1-b & 2-b: will receive a new Laser-Lok® abutment and a force-probe clinical attachment assessment at week-8; a biopsy harvested from the same study site will be delayed until week-16. The implants will be restored following standard technique and a final visit will occur 6 months following permanent restoration. | 0 | 10 | 0 | 10 |
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| D009066 |
| Mouth, Edentulous |
| D009059 | Mouth Diseases |
| D014076 | Tooth Diseases |