Haim Tal

Publications (119) View all

• Article: Combined Osteotome-Induced Ridge Expansion and Guided Bone Regeneration Simultaneous with Implant Placement: A Biometric Study.

  Roni Kolerman, Joseph Nissan, Haim Tal
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  ABSTRACT: PURPOSE: To evaluate the long-term outcome of a single-step ridge expansion osteotome procedure and implant placement combined with guided bone regeneration in patients presenting narrow maxillary alveolar ridges. MATERIALS AND METHODS: During the period 1999 to 2010, 41 patients aged 19 to 77 years (18 males; 23 females) suffering from partial or full edentulism associated with horizontal resorption of the maxillary ridges (2.5-5 mm) were treated using the combined ridge expansion and guided bone-regeneration techniques to obtain an improved bony base for implant placement. Implant survival, bone width measurements, clinical and radiologic implant success, and clinical complications were recorded and analyzed. RESULTS: Achievement of primary stability of the implant was impossible at six sites; these were recorded as failures. In the remaining 35 patients, one hundred sixteen endosseous titanium implants were simultaneously placed. Follow-up time varied between 6 and 144 months (mean 52.4); of these, 36% were followed up for periods of time longer than 60 months. Implant diameter and lengths varied between 3.3 to 4.8 and 12 to 16 mm, respectively. In the 35 successful procedures (one hundred sixteen implants), the overall implant survival rate was 100%. An average gain in ridge width was 3.5 ± 0.93 (p < .0001) and an average enlargement of the buccal bone was 1.91 ± 0.6 (p < .0001). The mean vertical mesial bone loss was 1.81 mm ± 1.07 (ranging from 0.3 to 4.2 mm), and the mean vertical distal bone loss was 1.74 mm ± 1.12 (ranging from 0.4 to 4.5 mm). In eight patients (32%), at least one implant presented bone loss of ≥3 mm. CONCLUSIONS: Within the limitations of this study, we suggest that the combined osteotome-induced ridge expansion and guided bone regeneration simultaneous with implant placement is a reliable procedure with reduced morbidity and may offer an alternative in suitable situations.
  Clinical Implant Dentistry and Related Research 01/2013; · 3.53 Impact Factor
• Article: Histomorphometric analysis of maxillary sinus augmentation using an alloplast bone substitute.

  Roni Kolerman, Gal Goshen, Nissan Joseph, Avital Kozlovsky, Saphal Shetty, Haim Tal
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  ABSTRACT: To evaluate the regenerative potential of a fully synthesized homogenous hydroxyapatite:β-tricalcium phosphate 60:40 alloplast material in sinus lift procedures. Hydroxyapatite:β-tricalcium phosphate was used for sinus floor augmentation. After 9 months, 12 biopsies were taken from 12 patients. Routine histologic processing was performed and specimens were analyzed using a light microscope and a digital camera. Histologic evaluation showed 26.4% newly formed bone, 27.3% residual graft material, and 46.3% bone marrow. The osteoconductive index was 33.5%. Hydroxyapatite:β-tricalcium phosphate 60:40 alloplast material was found to be biocompatible and osteoconductive in maxillary sinus augmentation procedures.
  Journal of oral and maxillofacial surgery: official journal of the American Association of Oral and Maxillofacial Surgeons 08/2012; 70(8):1835-43. · 1.58 Impact Factor
• Article: Opposing Effects of Diabetes and Tetracycline on the Degradation of Collagen Membranes in Rats.

  Meizi Eliezer, Carlos Nemcovsky, George Romanos, Avital Kozlovsky, Haim Tal, Roni Kolerman, Miron Weinreb, Ofer Moses
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  ABSTRACT: Background: Increased collagenolytic activity, characteristic of uncontrolled diabetes, may compromise collagen membrane (CM) survival. Tetracycline (TTC) possesses anti-collagenolytic properties and delays CM degradation in healthy animals. This study evaluated the degradation of TTC-immersed and non-immersed CMs in diabetic, compared with normoglycemic rats. Materials & methods: Diabetes was induced in fifteen 12-week old male Wistar rats by injection of 65 mg/kg Streptozotocin. Control group consisted of 15 normoglycemic rats. 60 bi-layered collagen membrane discs were labeled prior to implantation with Aminohexanoyl-Biotin-N-Hydroxysuccinimide Ester, 30 of those were immersed in 50 mg/mL TTC solution (experimental) or PBS (control). In each animal, 2 discs (control and experimental) were implanted in 2 mid-sagittal calvarial defects in the parietal bone. Similar non-implanted discs served as baseline. After 3 weeks, animals were euthanized and the calvaria and overlying soft tissues processed for demineralized histological analysis. Horseradish Peroxidase-conjugated streptavidin was used to detect the biotinylated collagen. The area of residual collagen within the membrane discs was measured and analyzed with a digital image analysis system. Several slides from each specimen wee also stained with H&E. Statistical analysis consisted of paired and unpaired t-tests. Results: The amount of residual collagen in PBS-immersed discs was lower in diabetic, compared with normoglycemic rats (69% of baseline vs. 93%, respectively (P<0.001). TTC immersion increased the amount of residual collagen contents both in diabetic (83% of baseline), and healthy animals (97.5% of baseline), (P<0.0001). Conclusions: Diabetes increases collagen membranes degradation while immersion in 50mg/mL TTC solution previous to implantation presents an opposite effect.
  Journal of Periodontology 05/2012; · 2.60 Impact Factor
• Source

  Available from: Haim Tal

  Chapter: Bioresorbable Collagen Membranes for Guided Bone Regeneration

  Haim Tal, Ofer Moses, Avital Kozlovsky, Carlos Nemcovsky
  04/2012; , ISBN: 978-953-51-0487-2
• Source

  Available from: InTech

  Chapter: Augmentation and Preservation of the Alveolar Process and Alveolar Ridge of Bone

  Haim Tal, Zvi Artzi, Roni Kolerman, Ilan Beitlitum, Gal Goshen
  04/2012; , ISBN: 978-953-51-0487-2