Articles - Dental Implant 1 en-us http://www.implantoloji.info N/A http://www.implantoloji.info www@implantoloji.info 20 http://www.implantoloji.info/articles/10/1/The-Significance-Of-Passive-Framework-Fit-In-Implant-Prosthodontics-Current-Status/Page1.html Saime Sahin, DDS, PhD, Murat C. Cehreli, DDS, PhDProfessor, Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.Absolute passive framework fit has not been achieved in the last three decades. There is no consensus but rather a number of suggestions regarding the acceptable level of misfit. In light of current knowledge, although there are claims that passive fit is a governing factor over the maintenance of osseointegration and implant success, there is a rising opposing trend in relevant literature. The materials and the techniques used for fabricating cast-frameworks are not dimensionally accurate and require further research and development. Obtaining a passive fit does not seem to be possible and may in fact be unnecessary. www@implantoloji.info (JDI editor) Fri, 02 Feb 2001 00:00:00 -0600 http://www.implantoloji.info/articles/9/1/Survey-of-Clinical-Members-of-the-Association-of-Dental-Implantology-in-the-United-Kingdom/Page1.html M.P. J. Young, BDS, D.H. Carter, BSc, MPhil, PhD, P. Sloan, BDS, PhD, FRCPath, FDS RCS (Eng), A.A. Quayle, LDS, FDSRCS (Eng), PhDUnits of Oral Surgery and Oral Pathology, Turner Dental School and Hospital, University of Manchester, United Kingdom. The aims of this survey were todetermine recruitment rates of active oral implantologists, establish the proportion of participants who carry out the surgical aspects of implantology, quantify levels of surgical activity, determine the type of qualifications held by this sample, and identify the location of implant activity of clinical members of the Association of Dental Implantology (UK). Questionnaires were mailed to the 408 members of the ADI registered as clinical members of the ADI; data were collected between July 1998 and May 1999. A response rate of 66.9% was achieved. Active members increased markedly from 1985 to 1995. Surgical activity and clinical experience varied widely: 32.9% had placed 100 to 499 implants, 29.8% had inserted 1 to 49 implants, and 4.3% had inserted $2,000 implants. The total number of implants inserted by this sample could only be estimated (between 51,000 and 90,000). The majority of this sample possessed postgraduate qualifications, although only 2.6% possessed a degree in oral implantology. The data from this sample indicated that the recruitment rate to the ADI (UK) increased markedly between 1985 to 1995, after which it seems to have slowed down. Most of the respondents were involved in the surgical aspects of implantology, although the level of surgical involvement varied widely. The low incidence of postgraduate degrees in implantology might reflect the relatively limited opportunities currently available for such training in the UK. www@implantoloji.info (JDI editor) Wed, 24 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/8/1/An-Assessment-of-Implant-Coverage-in-Dental-Benefit-Plans/Page1.html Linda J. Thornton, DDS, MS, FACPDirector, Graduate Prosthodontics, Temple University School of Dentistry, Philadelphia, PA, USA.In the last 30 years, dental implantology has undergone widespread advances in technology and now complex, high - risk procedures are routine. Patients are becoming more vocal in their requests for this service from dentists in private practice and academic institutions. Unfortunately, although treatment modalities have improved, the cost for this service remains beyond the reach of the average patient. The purpose of this article is to assess the present status of implant coverage in dental benefit plans in the US. www@implantoloji.info (JDI editor) Sat, 20 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/7/1/Effects-of-a-Modified-Sandblasting-Surface-Treatment-on-Topographic-and-Chemical-Properties-of-Titanium-Surface/Page1.html Dehua Li, MD, DDS, PhD,Associate Professor, Dept. of Oral and Maxillofacial Surgery, Qindu Stomatological College, Xi’an 710032, P.R. China.Baolin Liu, MD, DDS,Professor and Chairman, Craniofacial Implant Center, Qindu Stomatological College, Xi’an 710032, P.R. China.Yong Han, PhD,Associate Professor, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R. China.Kewei Xu, PhD,Professor and Dean, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R. China.A modified sandblasting surface treatment (a noncoating, roughening surface modification of dental implants) has been developed that will overcome the defects of conventional coating techniques. To verify the feasibility and reliability of this method at the chemical and topographic levels, scanning electron microscopy, x-ray diffraction, and a titanium ion releasing test were used; the topography of titanium surface, the embedding of sandblasting particles, nonpollution of heteroelements, and anticorrosiveness of titanium were criteria. Results showed that the rough surface created by sandblast was rather irregular, full of sharp tips and many embedded sandblast particles, and its corrosive rate was increased. These characteristics were modified by oxalic acid attack; the contour of the rough surface became more regular and round, the embedded particles and the heteroelement pollution were thoroughly removed, and the Ti corrosive rate decreased dramatically. Oxalic acid attack modification also created numerous secondary micropores (2.0-mm diameter) on the basis of sandblasted surface macrotexture. This modified sandblasting surface treatment is feasible and reliable to apply to dental implants and does not decrease the biocompatibility of titanium. www@implantoloji.info (JDI editor) Thu, 18 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/6/1/Collagen-Membrane-Resorption-in-Dogs-A-Comparative-Study/Page1.html Kris W. Owens, DDS, MSPostgraduate Periodontics Student, Dept. of Periodontics, Louisiana State University School of Dentistry, New Orleans, LA, USA.Raymond A. Yukna, DMD, MSProfessor and Coordinator Postgraduate Periodontics, Dept. of Periodontics, Louisiana State University School of Dentistry, New Orleans, LA, USA.Guided tissue barriers using materials such as collagen are used in the hope of excluding epithelium and the gingival corium from the root surface or alveolar bone to facilitate regeneration. Convention suggests that the longer a membrane remains intact, the better the regeneration results. The purpose of this study was to determine the resorption rates of various collagen membranes in the oral cavity of dogs. Twelve adult mongrel dogs had three different collagen membranes (BioGide, AlloDerm porcine-derived, and Allo-Derm human-derived) randomly inserted and secured into surgical pouches made in their palates. Full-thickness tissue punch biopsy specimens taken at 1, 2, 3, or 4 months after surgery were evaluated histologically for membrane intactness and other associated changes. At 1 month, all membranes had slight to moderate deg radation. At 2 months, all membranes had moderate to severe degradation with the exception of one AlloDerm human-derived membrane that was intact. At 3 months, all membranes had severe degradation to not identifiable. At 4 months, all membranes had severe degradation to completely absent. Blood vessel penetration varied from none to moderate. Inflammation was found in only two samples. In the dog, all three tested collagen membranes showed slight to moderate degradation at 1 month and were severely degraded to completely absent at 4 months. Within the limits of transferring animal data to humans, clinicians need to be aware of these resorption rates when selecting membranes for guided tissue and bone regeneration. www@implantoloji.info (JDI editor) Mon, 15 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/5/1/Restoration-of-the-Atrophied-Mandible-Using-Basal-Osseointegrated-Implants-and-Fixed-Prosthetic-Superstructures/Page1.html Stefan Ihde, Dr med dentSenior Dentist, Gommiswald Dental Clinic, Uetliburg/SG, Switzerland.The atrophied mandibular alveolar ridge can be restored using basal osseointegrated implants, allowing the integration of complete fixed dentures. As a rule, the laterally inserted implants can be subjected to moderate loads immediately. The basal osseointegration procedure is advantageous for the patient because it allows speedy reconstruction of the masticatory function, and the cost of treatment is very moderate. Additional surgical interventions to facilitate access to screw threads in the mandible are not required. Basal osseointegration procedures allow the insertion of complete fixed dentures both in the maxilla and in the mandible. www@implantoloji.info (JDI editor) Sat, 13 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/4/1/Rehabilitation-of-A-Patient-With-Severe-Dentoalveolar-Injuries/Page1.html James A. Miller, DDSPrivate Practice Oral and Maxillofacial Surgery, Clinical Director, Implant Dentistry Centre, St. John’s, NF, Canada.This clinical report describes the emotional and physical rehabilitation of a young man. The impact of the injuries sustained and repeated failure of traditional dental treatment methods had caused the patient to become quite withdrawn. A successful outcome followed surgical placement of multiple titanium plasma-sprayed cylindrical fixtures in severely damaged dental supporting tissues to serve as intermediary abutments for complex maxillary and mandibular fixed prostheses. The loss of crestal bone during the postprosthetic years is determined. The advantages only implant dentistry could bring are identified. www@implantoloji.info (JDI editor) Tue, 09 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/3/1/Advanced-Alveolar-Crest-Atrophy-An-Alternative-Treatment-Technique-for-Maxilla-and-Mandible/Page1.html Rainer Bocklage, Dr. med. Dent.DUI, Private Practice, Dormagen, Germany.This clinical case is representative of numerous patients. The Diskimplant procedure presented has been in use for >8 years. High, long-term success rates are obtained with this treatment concept if the oral implantologist applies correct implant and prosthodontic techniques. www@implantoloji.info (JDI editor) Sat, 06 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/2/1/Immediate-Loading-of-Implant-Fixed-Mandibular-Prostheses/Page1.html Lino Esteve Colomina, MD, DDSPrivate Practice, Alicante, Spain.The preliminary results of this small clinical trial corroborate the results of previously mentioned authors, which show that immediate loading of anterior lower jaw implants is a viable technique if a proper primary fixation is achieved and the patient does not have any major risk factors. This therapeutic approach has proven to be highly advantageous for the comfort of patients, increasing their treatment acceptance and overall satisfaction. However, long-term results as well as larger case studies are needed before this protocol can be recommended for general use. In addition, experimental studies are necessary to identify the risk factors that can contraindicate immediate loading. They are also needed to find a reliable method of measuring boneimplant stability so that immediate and early loading can be conducted in a less haphazard manner. www@implantoloji.info (JDI editor) Thu, 04 Jan 2001 00:00:00 -0600 http://www.implantoloji.info/articles/1/1/Pain-and-Dental-Implantology-Sensory-Quantification-and-Affective-Aspects-Part-I-At-the-Private-Dental-Office/Page1.html Ernesto Muller, Dr Odont,Director, Dental Implant Center, Universidad Santa Maria, School of Dentistry, Adjunct Professor of Periodontology and Oral Biology, Goldman School of Dental Medicine, Boston University, Boston, MA, USA.Maria del Pilar Rios Calvo, Odont, MScDCoordinator of Prosthetics, Dental Implant Center, Universidad Santa María, School of Dentistry, Private Practice limited to Prosthetic Dentistry, Centro Profesional Tamanaco, Caracas, Venezuela.Does dental implantology hurt? The results of this research have demonstrated that the occurrence of pain is minimal and that the possibility of the onset of pain could be associated with the amount of trauma produced during the surgical procedures. At first-phase surgery, pain during swallowing and chewing can be expected. Pain in the implanted areas is anticipated to take place at a low intensity. The pain present after surgery can be easily managed following our presurgical and postsurgical medication protocol. Pain medication is generally not needed for more that 24 hours. Edema was the most prominent sign observed in the postoperative period after first-phase surgery; especially during the first 2 days. Hematoma was the second most common occurrence. The presence and intensity of edema will vary between patients. At second-phase surgery, slight discomfort that does not reach the level of pain is to be expected. However, strong postoperative pain that required pain medication was present in all patients who received acellular dermal grafts. This pain was easily controlled with the pain relief medications as prescribed in the standard presurgical and postsurgical medication instruction sheet, but had to be taken for a longer period of time. At second-phase surgery, edema and hematoma were not usually observed. www@implantoloji.info (JDI editor) Tue, 02 Jan 2001 00:00:00 -0600