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Ha mixtures
ICOMS 2011—Abstracts: Oral Papers the LAK group than in the LAA group (p < 0.05). The pain scores on the VAS at 6, 12, 24, 48 and 72 h after surgery were significantly higher in the LAA group than in the LAK group (p < 0.05). Conclusion: The combination administration of a local anesthetic and 0.2 mg/kg dose of ketamine for surgical extraction of impacted third molars can produce good local anesthesia while affording a comfortable procedure for the surgeon and patient and providing good postoperative analgesia with less swelling and significantly less trismus. Conflict of interest: None declared. doi:10.1016/j.ijom.2011.07.100
100 Effect of submucosal and inrtamuscular dexamethasone on postoperative sequelae after third molar surgery: comparative study B. Gursoytrak 1 , S. Apiliogullari 2 , M. Cakir 1 , Y.B. Ozdemir 1,∗ , E. Najafov 1 , G. Yildirim 1 , D. Dolanmaz 1 1 Oral and Maxillofacial Surgery, Selcuk University Faculty of Dentistry, Konya, Turkey 2 Anesthesiology and Intensive Care, Selcuk University Selcuklu Medical Faculty, Konya, Turkey
Aim: The aim is to evaluate the effectiveness of dexamethasone given submucosally and intramuscularly on postoperative complications after removal of impacted third molars in a preliminary randomised prospective clinical trial. Patients and methods: Thirty patients, each of whom required removal of a single impacted mandibular third molar under local anaesthesia, were randomly divided into 3 groups of 10 each. For the first group, 1 ml (4 mg) dexamethasone was added to 0.5 ml articaine hydrochloride and administered by submucosally with local anesthesics while applying buccal nerve block. For the second group, dexamethasone was injected intramuscularly one hour before the operation. The third group was consisted of control patients who received no dexamethasone. Facial swelling and maximal interincisal distance were measured preoperatively and at 2 and 7 days postoperatively. Pain was measured by counting the number of rescue analgesic tablets taken, and from the patients’ response to a visual analogue scale (VAS). Result: Dexamethasone groups showed significant reductions in swelling,
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pain and trismus (p < 0.05). Submucosal dexamethasone resulted in significantly less facial swelling on second day; pain on second and third days; trismus on second and seventh days postoperatively (p < 0.05). Submucosal dexamethasone resulted in significant differences than intramuscular dexamethasone except trismus on day 2 postoperatively. Conclusion: Dexamethasone 4 mg given submucosally is an effective way of minimising swelling, trismus, and pain after removal of impacted lower third molars, and is comparable with the intramuscular route. It offers a simple, safe, painless, non-invasive, and cost-effective treatment in moderate to severe cases. Conflict of interest: None declared.
blasting treatment powder ratio on Ra values followed the below order: Z25 > Z0 > Z50 > Z75 > Z100. Average roughness varied 1.5–4.5 m. Blasting treatment seems to help Ca/P accumulation on HA particles. Conflict of interest: None declared.
doi:10.1016/j.ijom.2011.07.101
Objective: To evaluate long-term successes and failures of autotransplanted premolars, followed up to 30 years. Materials and methods: This study investigated a consecutive group of 100 patients treated with autotransplantation caused tooth aplasia and tooth loss. All patients (9.2–14.4 years, mean 12.8), 53 boys and 47 girls, had one-rooted premolars transplanted from one region to another. Totally 118 premolars were transplanted in root stages with an open apex wider than 1 mm. Primary healing and follow-up were tested using a Siemens electrometric pulp tester to detect pulpal reinnervation and standardized radiographs to test transplant healing and root development generally. Assessments were carried out at 1, 4, 8, 12 and 24 weeks and thereafter yearly after transplantation. Transplants were moved or rotated orthodontically 3–9 months after transplantation. Results: Loss of teeth needed transplantation followed by orthodontic treatment. Most transplanted premolars showed normal tooth eruption, compared with contra laterals. Transplants induced tooth eruption and bone induction. Transplants erupted before visible root formation and before visible alveolar bone formation. Furthermore, marginal gingiva was transferred with both papillae. It was found successes of 93.1% and failures of 6.9% for all transplants. Premolars transplanted as maxillary incisors had a higher incidence of failures (15%) than premolars transplanted to the mandibular premolar regions (7.6%). Conclusion: Marginal gingiva was transferred with both papillae. Transplants induced tooth eruption and alveolar bone induction. Transplantation induced tooth eruption and bone induction. Transplantation of one-rooted premolars carried out
101 Evaluation of in vitro bioactivity on Ti6Al4V surfaces blasted with ZrO2 /Ha mixtures A.B. Hazar Yoruc 1 , C.B. S¸ener 2 , H. Eks¸io˘glu Yıldız 1 , F. U˘gurlu 2,∗ 1 Metallurgy and Materials Engineering, Yıldız Technical University, Turkey 2 Oral and Maxillofacial Surgery, Marmara University Faculty of Dentistry, Istanbul, Turkey
Aim: To analyse in vitro bioactivity of Ti6Al4V surfaces blasted with ZrO2 /HA mixtures. Materials and methods: Ti6Al4V discs (Ø = 7 mm) were used. Five treatment groups (3 samples for each) were prepared. Samples were sandblasted with zirconia (ZrO2 ) and hydroxyapatite (HA) powders. Qualitative surface analysis was performed with SEM. Roughness surface analysis of the samples was performed before and after blasting process. Finally, samples were embedded in simulated body fluid (SBF) for 1, 3 and 7 days. Results: SEM and roughness measurements showed that topographical variation with different ratio of ZrO2 /HA powders. EDS analysis results of samples sand blasted with different ratio of HA–ZrO2 powders and hold in SBF for 7 days showed that maximum HA adsorption is observed in the samples treated with Z75 blasting grit powders. Increased ZrO2 ratio in HA powders rose HA adsorbance on Ti surface. Blasting with different ratios of ZrO2 /HA mixtures results in increase in Ra values of all samples. Conclusion: Absorbed HA a month increased with higher ZrO2 ratio within mixture. Effect of ZrO2 /HA
doi:10.1016/j.ijom.2011.07.102
102 Long-term successes and failures of autotransplanted premolars H.U. Paulsen Municipal Dental Health Service of Denmark, Lyngby, Denmark
100 Effect of submucosal and inrtamuscular dexamethasone on postoperative sequelae after third molar surgery: comparative study B. Gursoytrak 1 , S. Apiliogullari 2 , M. Cakir 1 , Y.B. Ozdemir 1,∗ , E. Najafov 1 , G. Yildirim 1 , D. Dolanmaz 1 1 Oral and Maxillofacial Surgery, Selcuk University Faculty of Dentistry, Konya, Turkey 2 Anesthesiology and Intensive Care, Selcuk University Selcuklu Medical Faculty, Konya, Turkey
Aim: The aim is to evaluate the effectiveness of dexamethasone given submucosally and intramuscularly on postoperative complications after removal of impacted third molars in a preliminary randomised prospective clinical trial. Patients and methods: Thirty patients, each of whom required removal of a single impacted mandibular third molar under local anaesthesia, were randomly divided into 3 groups of 10 each. For the first group, 1 ml (4 mg) dexamethasone was added to 0.5 ml articaine hydrochloride and administered by submucosally with local anesthesics while applying buccal nerve block. For the second group, dexamethasone was injected intramuscularly one hour before the operation. The third group was consisted of control patients who received no dexamethasone. Facial swelling and maximal interincisal distance were measured preoperatively and at 2 and 7 days postoperatively. Pain was measured by counting the number of rescue analgesic tablets taken, and from the patients’ response to a visual analogue scale (VAS). Result: Dexamethasone groups showed significant reductions in swelling,
1055
pain and trismus (p < 0.05). Submucosal dexamethasone resulted in significantly less facial swelling on second day; pain on second and third days; trismus on second and seventh days postoperatively (p < 0.05). Submucosal dexamethasone resulted in significant differences than intramuscular dexamethasone except trismus on day 2 postoperatively. Conclusion: Dexamethasone 4 mg given submucosally is an effective way of minimising swelling, trismus, and pain after removal of impacted lower third molars, and is comparable with the intramuscular route. It offers a simple, safe, painless, non-invasive, and cost-effective treatment in moderate to severe cases. Conflict of interest: None declared.
blasting treatment powder ratio on Ra values followed the below order: Z25 > Z0 > Z50 > Z75 > Z100. Average roughness varied 1.5–4.5 m. Blasting treatment seems to help Ca/P accumulation on HA particles. Conflict of interest: None declared.
doi:10.1016/j.ijom.2011.07.101
Objective: To evaluate long-term successes and failures of autotransplanted premolars, followed up to 30 years. Materials and methods: This study investigated a consecutive group of 100 patients treated with autotransplantation caused tooth aplasia and tooth loss. All patients (9.2–14.4 years, mean 12.8), 53 boys and 47 girls, had one-rooted premolars transplanted from one region to another. Totally 118 premolars were transplanted in root stages with an open apex wider than 1 mm. Primary healing and follow-up were tested using a Siemens electrometric pulp tester to detect pulpal reinnervation and standardized radiographs to test transplant healing and root development generally. Assessments were carried out at 1, 4, 8, 12 and 24 weeks and thereafter yearly after transplantation. Transplants were moved or rotated orthodontically 3–9 months after transplantation. Results: Loss of teeth needed transplantation followed by orthodontic treatment. Most transplanted premolars showed normal tooth eruption, compared with contra laterals. Transplants induced tooth eruption and bone induction. Transplants erupted before visible root formation and before visible alveolar bone formation. Furthermore, marginal gingiva was transferred with both papillae. It was found successes of 93.1% and failures of 6.9% for all transplants. Premolars transplanted as maxillary incisors had a higher incidence of failures (15%) than premolars transplanted to the mandibular premolar regions (7.6%). Conclusion: Marginal gingiva was transferred with both papillae. Transplants induced tooth eruption and alveolar bone induction. Transplantation induced tooth eruption and bone induction. Transplantation of one-rooted premolars carried out
101 Evaluation of in vitro bioactivity on Ti6Al4V surfaces blasted with ZrO2 /Ha mixtures A.B. Hazar Yoruc 1 , C.B. S¸ener 2 , H. Eks¸io˘glu Yıldız 1 , F. U˘gurlu 2,∗ 1 Metallurgy and Materials Engineering, Yıldız Technical University, Turkey 2 Oral and Maxillofacial Surgery, Marmara University Faculty of Dentistry, Istanbul, Turkey
Aim: To analyse in vitro bioactivity of Ti6Al4V surfaces blasted with ZrO2 /HA mixtures. Materials and methods: Ti6Al4V discs (Ø = 7 mm) were used. Five treatment groups (3 samples for each) were prepared. Samples were sandblasted with zirconia (ZrO2 ) and hydroxyapatite (HA) powders. Qualitative surface analysis was performed with SEM. Roughness surface analysis of the samples was performed before and after blasting process. Finally, samples were embedded in simulated body fluid (SBF) for 1, 3 and 7 days. Results: SEM and roughness measurements showed that topographical variation with different ratio of ZrO2 /HA powders. EDS analysis results of samples sand blasted with different ratio of HA–ZrO2 powders and hold in SBF for 7 days showed that maximum HA adsorption is observed in the samples treated with Z75 blasting grit powders. Increased ZrO2 ratio in HA powders rose HA adsorbance on Ti surface. Blasting with different ratios of ZrO2 /HA mixtures results in increase in Ra values of all samples. Conclusion: Absorbed HA a month increased with higher ZrO2 ratio within mixture. Effect of ZrO2 /HA
doi:10.1016/j.ijom.2011.07.102
102 Long-term successes and failures of autotransplanted premolars H.U. Paulsen Municipal Dental Health Service of Denmark, Lyngby, Denmark