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Changes in the marginal bone level surrounding the implant are the frequently used parameters in assessing the short- and long-term success. Multiple biological and biomechanical factors have been reported to adversely affect marginal bone level. Recently, initial vertical mucosal tissue thickness has also been reported to have an impact on bone stability.The hypothesis of present study is that soft tissue thickness on implant placement has no positive impact of crestal bone remodeling.
The aim of this study is to evaluate the clinical and radiographical results of submerged and nonsubmerged implants with thin (<3 mm) and thick (>3 mm) soft tissue over 1.5 year after implant placement. All submerged and nonsubmerged implants were randomly placed as split-mouth. Clinical periodontal parameters were recorded. Crestal bone levels were analyzed from the day of implants inserted to 1.5 year after prosthetic loading on digitally standardized radiographs. Non-parametric test were used for statistically analysis.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Nonsubmerged thick group | Active Comparator | Nonsubmerged type of implants placed with thick (>3 mm) soft tissue |
|
| Nonsubmerged thin group | Active Comparator | Nonsubmerged type of implants placed with thin (<3 mm) soft tissue |
|
| Submerged thick group | Active Comparator | Submerged type of implants placed with thick (>3 mm) soft tissue |
|
| Submerged thin group | Active Comparator | Submerged type of implants placed with thin (<3 mm) soft tissue |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Implant | Other | One or two stages of implants within thin and thick gingiva were monitored 1.5 year after placement |
|
| Measure | Description | Time Frame |
|---|---|---|
| Crestal bone loss | Crestal bone loss was measured on radiographs between baseline-4th month after placement | Change from baseline crestal bone level at 4th month after placement, |
| Crestal bone loss | Crestal bone loss was measured on radiographs between baseline-6th month after placement | Change from baseline crestal bone level at 6th month after placement, |
| Crestal bone loss | Crestal bone loss was measured on radiographs between baseline-12th month after placement | Change from baseline crestal bone level at 12th month after placement, |
| Crestal bone loss | Crestal bone loss was measured on radiographs between baseline-18th month after placement | Change from baseline crestal bone level at 18th month after placement, |
| Measure | Description | Time Frame |
|---|---|---|
| Probing depth | Probing depth was measured with a plastic periodontal probe at 4th month after placement | Evaluation of probing depth at 4th month after placement (mm) |
| Probing depth | Probing depth was measured with a plastic periodontal probe at 6th month after placement |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Deniz Cengiz Özkaya, PhD,DDS | Ege University, School of Dentistry | Principal Investigator |
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| ID | Term |
|---|---|
| D016388 | Tooth Loss |
| ID | Term |
|---|---|
| D010510 | Periodontal Diseases |
| D009059 | Mouth Diseases |
| D009057 | Stomatognathic Diseases |
| D014076 | Tooth Diseases |
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| ID | Term |
|---|---|
| D004343 | Drug Implants |
| ID | Term |
|---|---|
| D003692 | Delayed-Action Preparations |
| D004304 | Dosage Forms |
| D004364 | Pharmaceutical Preparations |
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| Evaluation of probing depth at 6th month after placement (mm) |
| Probing depth | Probing depth was measured with a plastic periodontal probe at 12th month after placement | Evaluation of probing depth at 12th month after placement (mm) |
| Probing depth | Probing depth was measured with a plastic periodontal probe at 18th month after placement | Evaluation of probing depth at 18th month after placement (mm) |
| Keratinized tissue level | Keratinized tissue level measured with a plastic periodontal probe at 4th month after placement | Evaluation of keratinized tissue level at 4th month after placement (mm) |
| Keratinized tissue level | Keratinized tissue level measured with a plastic periodontal probe at 6th month after placement | Evaluation of keratinized tissue level at 6th month after placement (mm) |
| Keratinized tissue level | Keratinized tissue level measured with a plastic periodontal probe at 12th month after placement | Evaluation of keratinized tissue level at 12th month after placement (mm) |
| Keratinized tissue level | Keratinized tissue level measured with a plastic periodontal probe at 18th month after placement | Evaluation of keratinized tissue level at 18th month after placement (mm) |
| Modified plaque index | Modified plaque index was recorded at medial and distal surface of implants | Modified plaque index was recorded at 4th month after implant placement |
| Modified plaque index | Modified plaque index was recorded at medial and distal surface of implants | Modified plaque index was recorded at 6th month after implant placement |
| Modified plaque index | Modified plaque index was recorded at medial and distal surface of implants | Modified plaque index was recorded at 12th month after implant placement |
| Modified plaque index | Modified plaque index was recorded at medial and distal surface of implants | Modified plaque index was recorded at 18th month after implant placement |
| Modified sulcus bleeding index | Modified sulcus bleeding index was recorded after 10 second of probing | Modified sulcus bleeding index was recorded at 4th month after implant placement |
| Modified sulcus bleeding index | Modified sulcus bleeding index was recorded after 10 second of probing | Modified sulcus bleeding index was recorded at 6th month after implant placement |
| Modified sulcus bleeding index | Modified sulcus bleeding index was recorded after 10 second of probing | Modified sulcus bleeding index was recorded at 12th month after implant placement |
| Modified sulcus bleeding index | Modified sulcus bleeding index was recorded after 10 second of probing | Modified sulcus bleeding index was recorded at 18th month after implant placement |