Background: Immediate implant placement has become a routine and regular clinical practice. When the labial bone plate develops a dehiscence-type defect, delayed implant placement was recommended to give suitable amount of time for soft tissue thickening. However, it has a number of drawbacks, including a lengthy treatment period, the requirement for two surgical procedures, and a potential loss of facial contour. When immediate implant is placed with flap elevation and guided bone regeneration in type II socket, labial bone augmentation results were satisfactory, but in terms of soft tissue, it led to midfacial recession and loss of soft tissue contour, resulting in a compromised final esthetic result. To reduce these drawbacks, implant can be immediately placed by vestibular socket therapy using collagen membrane. Aim of this study: To compare labial bone augmentation in immediate implant placement in type II extraction sockets by using collagen membrane placed by two different modalities.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
18
patients will undergo immediate implant placement and a mucoperiosteal tunnel will be made through a vestibular incision till labial orifice of the socket, a collagen membrane will be inserted under the tunnel and stabilized by membrane tacks. The space between the membrane and implant will be filled with mixture of allograft and xenograft bone material and any autogenous bone chips harvested from local surgical sites.
patients will undergo immediate implant placement combined with open flap surgery and labial plate augmentation.
Outpatient Clinic of Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University
Alexandria, Egypt
change in buccal bone thickness
CBCT will be taken for each patient and Labial bone thickness means the distance between the implant surface and the outer surface of bone
Time frame: baseline, 3 months, and 6 months
change in buccal bone height
Labial bone height means the distance between the apical end of the implant (which is projected on the baseline image) and the crest of the labial bone of both images
Time frame: Baseline, 3 months, and 6 months
Volumetric change of buccal soft tissue contour
The impressions will be taken using lab scanner to create digital surface models in Standard Triangle Language (STL) format, all STL files will be imported to a digital software. The best-fit algorithm will be used to superimpose digital surface models, when comparing each area of interest (AOI) throughout out the follow-up period.
Time frame: Baseline and 6 months
change in gingival esthetics
The score incorporates seven domains: mesial papilla, distal papilla, soft tissue level, soft tissue contour, deficient alveolar process, soft tissue color, and texture. Each variable is scored from 0 to 2, with 2 being the best outcome. The total pink esthetic score will be calculated by adding the scores of the seven domains and ranged from 0 to 14 (best overall esthetic outcome).
Time frame: Baseline and 6 months
chang in Modified Sulcus Bleeding Index
a score of 0-3 will be assigned to each labial and palatal surface of the implant then the average for each implant will be calculated according to the following criteria: Score 0: No bleeding when a periodontal probe is passed along the gingival margin adjacent to the implant. Score 1: Isolated bleeding spots visible. Score 2: Blood forms a confluent red line on margin. Score 3: Heavy or profuse bleeding
Time frame: Baseline and 6 months
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