This study is mainly targeted affected teeth which could not be retained, and patients are willing to undergo implant repair at the later stage. After teeth extraction, Geistlich Bio-Oss ® Particles or Bio-Oss ® Collagen are immediately implanted in the teeth extraction socket and covered with Bio-Gide ® collagen membrane for site preservation.Through postoperative follow-up, postoperative clinical and imaging objective indicators, combined with the subjective evaluation of surgeons and patients, and compared with conventional extraction treatment method, the study is aimed to evaluate the effectiveness of different site preservation of alveolar crest preservation, in order to reduce the alveolar bone width and height loss, effectively reduce alveolar bone absorption, or even achieve bone incrementation, thus to get the ideal site preservation effect, to improve the oral implant success rate, improve implant aesthetic score and patient satisfaction, provide more clinical standard reference of the clinical application of site preservation.
Study Type
OBSERVATIONAL
Enrollment
88
Changes in the alveolar crest height - central
The central alveolar bone height of the ideal implant site will be measured with CBCT at 3 months after tooth extraction or plus site preservation
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Changes in the alveolar crest width - central
The central alveolar bone width of the ideal implant site will be measured with CBCT at 3 months after tooth extraction alone or plus site preservation
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Changes in the alveolar bone width - different depths
The width of the alveolar bone at 1,3,5, and 7mm below the alveolar crest will be measured with CBCT at 3 months after tooth extraction or plus site preservation
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Changes in the alveolar bone height - different horizontal sites
The height of the alveolar bone will be measured at the mesial, central and distal of buccal and lingual of alveolar crest,and the midpoint of the mesial and distal of interproximal sites with CBCT at 3 months after tooth extraction alone or plus site preservation
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Soft tissue thickness
The thickness of soft tissue will be measured at middle, central, and distal sites of both buccal-lingual sides,3mm from free gingival margin
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Plaque index (PLI)
Each tooth extraction socket will be measured on 6 sites: buccal, central and lingual of both mesial-distal sides
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Bleeding index (BI)
Each tooth extraction socket will be measured on 6 sites: buccal, central and lingual of both mesial-distal sides
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Probing depth (PD)
Each tooth extraction socket will be measured on 6 sites: buccal, central and lingual of both mesial-distal sides
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Phenotype assessment
Whether thick or thin gingival biotype will be detected by the transparency of the soft tissue while periodontal probing diagnosis
Time frame: up to 12 weeks after Dental extraction or site preservation surgery
Pain degree
The Visual Analogue Scale (VAS) pain score was evaluated: 0-10 (0: no pain; 1-3: slightly painful, acceptable; 4-6: painful, disrupt sleep, tolerable; 7-10: very painful, untolerable, affect sleep and diet)
Time frame: up to 12 weeks after Dental extraction or site preservation surgery.
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