Hyun-Woo Lee

Publications (2)3.28 Total impact

• Article: Retrospective multicenter evaluation of tapered implant with a sandblasted and acid-etched surface at 1 to 4 years of function.

  Min-Su Bae, Dong-Seok Sohn, Mi-Ra Ahn, Hyun-Woo Lee, Heui-Seung Jung, Im-Hee Shin
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  ABSTRACT: The aim of this retrospective study was to evaluate the cumulative survival rate of tapered implant with a sandblasted and acid-etched surface placed in edentulous patients. A retrospective study was performed by evaluating MIS seven implants consecutively placed from December 2004 to January 2008. Patient records were reviewed to determine gender, age at implant placement, implant location, prosthesis type, marginal bone loss according to treatment procedure, number of implants, and number of failed implants. The survival rate of the implants was analyzed, and radiographic evaluation was performed. A total of 294 implants were placed in 92 patients at the 3 centers. The observation period after implantation ranged from 22 to 59 months, with a mean of 38 months. The cumulative survival rate of MIS seven implants was 97.3%. After 1 year of functional loading, the mean marginal bone loss was 0.33 mm. This retrospective, multicenter study demonstrates that this dental implant system gives clinically reliable results.
  Implant dentistry 08/2011; 20(4):280-4. · 1.51 Impact Factor
• Article: Comparison of two piezoelectric cutting inserts for lateral bony window osteotomy: a retrospective study of 127 consecutive sites.

  Dong-Seok Sohn, Jee-Won Moon, Hyun-Woo Lee, Byung-Ju Choi, Im-Hee Shin
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  ABSTRACT: The aim of the present retrospective clinical study was to compare the efficacy of two piezoelectric cutting inserts for the incidence, size, and types of sinus membrane perforations, and to evaluate their various advantages for lateral window osteotomy. The study consisted of 127 maxillary sinus augmentation procedures performed at two centers. A bony window was made on the lateral wall of the maxillary sinus with either the piezoelectric saw or the round diamond insert and repositioned over the bone graft as a homologous bony barrier. The rate of membrane perforation during sinus augmentation between the two groups was compared and analyzed statistically by the chi-square test and the two-sample t test. Seven perforations were seen in the 127 maxillary sinus procedures in this study (5.51%). Six perforations in 84 cases (7.14%) occurred with the piezoelectric saw and one perforation in 43 sites (2.32%) occurred while using the round insert. No statistically significant difference was found between the rates of membrane perforation between the two inserts. The lateral bony window was created effectively with either of the two kinds of piezoelectric inserts. The membrane perforation rate was not significantly affected by the type of piezoelectric insert. The piezoelectric saw insert was more advantageous than the round diamond due to its greater precision and easier repositioning of the lateral bony window as a barrier.
  The International journal of oral & maxillofacial implants 25(3):571-6. · 1.78 Impact Factor