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Bone regeneration in dehiscence‐type defects at chemically modified (SLActive ® ) and conventional SLA titanium implants: a pilot study in dogs
Author(s) -
Schwarz Frank,
Herten Monika,
Sager Martin,
Wieland Marco,
Dard Michel,
Becker Jürgen
Publication year - 2007
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.2006.01008.x
Subject(s) - beagle , dehiscence , dentistry , implant , buccal administration , medicine , titanium , regeneration (biology) , materials science , surgery , metallurgy , biology , microbiology and biotechnology
Objectives: The aim of the present study was to evaluate bone regeneration in dehiscence‐type defects at titanium implants with chemically modified (mod) and conventional sand‐blasted/acid‐etched (SLA) surfaces. Material and Methods: Standardized buccal dehiscence defects (height: 3 mm, width: 3 mm) were surgically created following implant site preparation in both the upper and lower jaws of four beagle dogs. modSLA and SLA implants were inserted bilaterally according to a split‐mouth design. The animals were sacrificed after 2 and 12 weeks ( n =2 animals each). Dissected blocks were processed for histomorphometrical analysis: defect length, new bone height (NBH), percent linear fill (PLF), percent of bone‐to‐implant contact (BIC‐D) and area of new bone fill (BF). Results: Wound healing at SLA implants was predominantly characterized by the formation of a dense connective tissue at 2 and 12 weeks, without significant increases in mean NBH, PLF, BIC‐D or BF values. In contrast, modSLA implants exhibited a complete defect fill at 12 weeks following implant placement. In particular, histomorphometrical analysis revealed the following mean values at 12 weeks: NBH (3.2±0.3 mm), PLF (98%), BIC‐D (82%) and BF (2.3±0.4 mm 2 ). Conclusion: Within the limits of the present study, it was concluded that modSLA titanium surfaces may promote bone regeneration in acute‐type buccal dehiscence defects at submerged implants.