Immediately loaded titanium implant with a tissue-stabilizing/maintaining design ('beyond platform switch') retrieved from man after 4 weeks: a histological and histomorphometrical evaluation. A case report

被引:105
作者
Degidi, Marco [1 ,2 ]
Iezzi, Giovanna [1 ]
Scarano, Antonio [1 ]
Piattelli, Adriano [1 ]
机构
[1] Univ G dAnnunzio, Sch Dent, Chieti, Italy
[2] Private Practice, Bologna, Italy
关键词
conical abutment connection; crestal bone remodeling; dental implants; histology; immediate loading; microgap; Morse cone connection; platform switching;
D O I
10.1111/j.1600-0501.2007.01449.x
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Background: After implant insertion and loading, crestal bone usually undergoes remodeling and resorption. If the horizontal relationship between the outer edge of the implant and a smaller-diameter component ('platform switching') is altered, there seems to be reduced crestal bone loss. Immediate loading allows immediate restoration of esthetics and function, reduces morbidity, and facilitates functional rehabilitation. Materials and methods: Three Morse cone connection implants were inserted in the right posterior mandible in a 29-year-old partially edentulous patient. The platform of the implant was inserted 2 mm below the level of the alveolar crest. After a 1-month loading period, the most distal mandibular implant was retrieved with a trephine bur for psychological reasons. Results: At low-power magnification, it was possible to see that bone was present 2 mm above the level of the implant shoulder. No resorption of the coronal bone was present. No infrabony pockets were present. At the level of the shoulder of the implant, it was possible to observe the presence of dense connective tissue with only a few scattered inflammatory cells. Newly formed bone was found in direct contact with the implant surface. The bone-implant contact percentage was 65.3 +/- 4.8%. Conclusions: Abutments smaller than the diameter of the implant body (platform switching) in combination with an absence of micromovement and microgap may protect the peri-implant soft and mineralized tissues, explaining the observed absence of bone resorption. Immediate loading did not interfere with bone formation and did not have adverse effects on osseointegration.
引用
收藏
页码:276 / 282
页数:7
相关论文
共 54 条
[1]  
Abrahamsson I, 1998, CLIN ORAL IMPLAN RES, V9, P73
[2]   A 15-YEAR STUDY OF OSSEOINTEGRATED IMPLANTS IN THE TREATMENT OF THE EDENTULOUS JAW [J].
ADELL, R ;
LEKHOLM, U ;
ROCKLER, B ;
BRANEMARK, PI .
INTERNATIONAL JOURNAL OF ORAL SURGERY, 1981, 10 (06) :387-416
[3]  
Branemark P I, 1977, Scand J Plast Reconstr Surg Suppl, V16, P1
[4]  
BRUNSKI JB, 1992, TISSUE INTEGRATION IN ORAL, ORTHOPEDIC, AND MAXILLOFACIAL RECONSTRUCTION, P108
[5]  
BRUNSKI JB, 1991, BONE-BIOMATERIAL INTERFACE, P391
[6]  
CARTER DR, 1991, BONE-BIOMATERIAL INTERFACE, P367
[7]  
Chou Cherng-Tzeh, 2004, J Oral Implantol, V30, P134, DOI 10.1563/1548-1336(2004)30<134:APICBL>2.0.CO
[8]  
2
[9]   Biologic width around titanium implants. A histometric analysis of the implanto-gingival junction around unloaded and loaded nonsubmerged implants in the canine mandible [J].
Cochran, DL ;
Hermann, JS ;
Schenk, RK ;
Higginbottom, FL ;
Buser, D .
JOURNAL OF PERIODONTOLOGY, 1997, 68 (02) :186-197
[10]  
Degidi Marco, 2004, J Oral Implantol, V30, P289, DOI 10.1563/0695.1