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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03045458
Other study ID # D.Ü.D.F.E.K.2010/02
Secondary ID
Status Completed
Phase N/A
First received January 25, 2017
Last updated February 6, 2017
Start date September 1, 2010
Est. completion date June 1, 2011

Study information

Verified date February 2017
Source Firat University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The present study was compared the level of alveolar bone loss, clinical parameters and IL-1β in PICF in one- or two-stage surgical procedures. Half of the patients were performed tissue level implant while other half were performed bone level implant.


Description:

The present study included 40 healthy patients (24 males and 16 females; mean age, 30.75 ± 8.58 years) who had one tooth absent in the mandible, at the Department of Periodontology, Dicle University, Diyarbakir, Turkey, between 2010 and 2011. All patients were informed in detail about the study protocol, and they were asked to sign informed consent forms. Ethics committee approval was obtained from Dicle University Ethics Committee for this study (D.Ü.D.F.E.K.2010/02)

This study was designed as a prospective, randomized, controlled study. Randomization was performed prior to surgery by opening a sequentially numbered sealed envelope corresponding to the patient recruitment number. Investigators received randomization instructions only after enrolling a subject and immediately prior to surgery. The participants were randomly divided into two groups. A one-stage surgical procedure was performed on 20 patients (Group I) and a two-stage surgical procedure was performed on the other 20 patients (Group II). The primary outcome of the study was a change in alveolar bone level at the implant site between T0 and T2 months after surgery measured on CBCT. The secondary outcomes between T0, T1, and T2 were changes the level of IL-1β PICF, probing pocket depth (PPD), modified plaque index (mPI), modified gingival index (mGI), and modified bleeding index (mBI). All implants (Straumann AG, Waldenburg, Switzerland) were inserted by the same periodontist (T.T.Y.) in the present study. Pre-surgical radiographic evaluation was conducted using CBCT. Before surgery, the patient's mouth was rinsed with chlorhexidine mouthwash. After local anesthesia, full thickness flaps were reflected, and osteotomies were prepared in the first mandibular molar sites. In these surgical operations, 20 tissue-level and 20 bone-level dental implants 12 mm in length and 4.8 mm in diameter were inserted in Group I and Group II, respectively. Three months later, second-stage surgery was performed and implant exposed into the oral cavity. Cover screw was removed and replaced with healing abutments. Three months waited for second surgery in bone level implants. Patients of both groups were enrolled in a monthly periodontal/peri-implant maintenance program after abutments were connected in which, full mouth scaling was performed around all natural teeth and implant surfaces. Oral hygiene instructions regarding regular tooth brushing were given and patients were encouraged to floss the teeth and periimplant surfaces daily. There was no implant failed during the study and adverse event of these treatments.


Recruitment information / eligibility

Status Completed
Enrollment 40
Est. completion date June 1, 2011
Est. primary completion date October 1, 2010
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 60 Years
Eligibility Inclusion Criteria:

- patients in the study who had one tooth absent in the mandible

- patients in the study should be least 18 years old.

Exclusion Criteria:

Patients in the study were the absence of the following points;

- poor mouth hygiene,

- bruxism, dental implants,

- chemotherapy or radiotherapy,

- addictions (alcohol, cigarettes, and medications),

- disease in the jawbones observed clinically or radiographically,

- pregnancy,

- antibiotic and/or anti-inflammatory medication use in the last three months.

Study Design


Related Conditions & MeSH terms


Intervention

Device:
tissue level dental implant
After local anesthesia, full thickness flaps were reflected, and osteotomies were prepared in the first mandibular molar sites. In these surgical operations, 20 tissue-level implants 12 mm in length and 4.8 mm in diameter were inserted in Group I. Cover screw was removed and replaced with healing abutments.
Bone level dental implant
After local anesthesia, full thickness flaps were reflected, and osteotomies were prepared in the first mandibular molar sites. In these surgical operations, 20 bone-level dental implants 12 mm in length and 4.8 mm in diameter were inserted inGroup II. Three months later, second-stage surgery was performed and implant exposed into the oral cavity. Cover screw was removed and replaced with healing abutments. Three months waited for second surgery in bone level implants.

Locations

Country Name City State
Turkey Dicle University Diyarbakir

Sponsors (2)

Lead Sponsor Collaborator
Firat University Dicle University

Country where clinical trial is conducted

Turkey, 

Outcome

Type Measure Description Time frame Safety issue
Primary change of alveolar bone level The primary outcome of the study was a change in alveolar bone level (height in mm) at the 40 implant site between T0 and T2 months after surgery measured on CBCT. All measurements were performed at four sites (mesial, distal, buccal, and lingual) around each dental implant at T0 and T2. These four values were then averaged for each dental implant.
Alveolar bone level were measured in millimeters (height in mm) from a fixed reference point on the implant (implant shoulder to the most coronal position of the crestal bone contacting the implant).
0 and 6 month
Secondary changes level of IL-1ß The secondary outcome of the study was change the level of IL-1ß pg/ml between T0, T1, and T2. To obtain PICF, filter paper strips were gently inserted into the peri-implant crevice for 30 s at the mesial, distal, buccal, and lingual sites of the dental implant. A Williams periodontal probe was used for all clinical measurements.These parameters were recorded for evaluating the clinical status of the dental implants. All measurements were performed at four sites around each dental implant. For the statistical analysis, median of the four measurements at each implant was used.
The level of IL-1ß pg/ml (weight in picogram, weight in milliliter)
0, 3, and 6 month
Secondary changes of PPD The secondary outcome of the study was change of the PPD between T0, T1, and T2. A Williams periodontal probe was used for all clinical measurements.These parameters were recorded for evaluating the clinical status of the dental implants. All measurements were performed at four sites around each dental implant. For the statistical analysis, median of the four measurements at each implant was used.
Probing pocket depth (PPD) (depth in mm), were measured
0, 3, and 6 month
Secondary changes of Modified plaque index The secondary outcome of the study was change of the Modified plaque index between T0, T1, and T2. A Williams periodontal probe was used for all clinical measurements.These parameters were recorded for evaluating the clinical status of the dental implants. All measurements were performed at four sites around each dental implant. For the statistical analysis, median of the four measurements at each implant was used.
Modified plaque index (0=no plaque, 1= mild plaque, 2= moderate plaque, 3=severe plaque).
0, 3, and 6 month
Secondary changes of Modified gingival index The secondary outcome of the study was change of the Modified gingival index between T0, T1, and T2. A Williams periodontal probe was used for all clinical measurements.These parameters were recorded for evaluating the clinical status of the dental implants. All measurements were performed at four sites around each dental implant. For the statistical analysis, median of the four measurements at each implant was used.
Modified gingival index (0=healthy, 1=mild inflammation 2= moderate inflammation 3=severe inflammation).
0, 3, and 6 month
Secondary changes of Modified bleeding index The secondary outcome of the study was change of the Modified bleeding index between T0, T1, and T2. A Williams periodontal probe was used for all clinical measurements.These parameters were recorded for evaluating the clinical status of the dental implants. All measurements were performed at four sites around each dental implant. For the statistical analysis, median of the four measurements at each implant was used.
Modified bleeding index (0= no bleeding, 1= mild bleeding, 2= moderate bleeding, 3=severe bleeding).
0, 3, and 6 month
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