| 1. |
- Albrektsson, Tomas, 1945, et al.
(författare)
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Bone loss around oral and orthopedic implants: An immunologically based condition
- 2019
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Ingår i: Clinical Implant Dentistry and Related Research. - : Wiley. - 1523-0899 .- 1708-8208. ; 21:4, s. 786-795
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Tidskriftsartikel (refereegranskat)abstract
- Background Marginal bone resorption has by some been identified as a "disease" whereas in reality it generally represents a condition. Purpose The present article is a comparison between oral and orthopedic implants, as previously preferred comparisons between oral implants and teeth seem meaningless. Materials and Methods The article is a narrative review on reasons for marginal bone loss. Results and Conclusions The pathology of an oral implant is as little related to a tooth as is pathology of a hip arthroplasty to a normally functioning, pristine hip joint. Oral as well as orthopedic implants are recognized as foreign bodies by the immune system and bone is formed, either in contact or distance osteogenesis, to shield off the foreign materials from remaining tissues. A mild immune reaction coupled to a chronic state of inflammation around the implant serve to protect implants from bacterial attacks. Having said this, an overreaction of the immune system may lead to clinical problems. Marginal bone loss around oral and orthopedic implants is generally not dependent on disease, but represents an immunologically driven rejection mechanism that, if continuous, will threaten implant survival. The immune system may be activated by various combined patient and clinical factors or, if rarely, by microbes. However, the great majority of cases with marginal bone loss represents a temporary immune overreaction only and will not lead to implant failure due to various defense mechanisms.
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| 2. |
- Albrektsson, Tomas, 1945, et al.
(författare)
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Histologic investigations on 33 retrieved Nobelpharma implants.
- 1993
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Ingår i: Clinical materials. - 0267-6605. ; 12:1, s. 1-9
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Tidskriftsartikel (refereegranskat)abstract
- Thirty Nobelpharma implants were retrieved from 17 patients despite a remaining clinical stability, after between 1 and 16 years of clinical function. The reasons for implant removal were bone resorption in combination with soft tissue disorders, psychological causes, implant fracture and post mortem cases. When measured at the cortical passage, there was an average of 84.9% direct bone-to-implant contact and 81.8% average surface bone area in individual threads as evaluated in a computerized morphometric system at the light microscopic level.
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| 3. |
- Aspenberg, P., et al.
(författare)
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Drug test chamber : a titanium implant for administration of biochemical agents to a standardized bone callus in situ
- 1988
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Ingår i: Journal of Biomedical Engineering. - : Elsevier BV. - 0141-5425. ; 10:1, s. 70-73
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Tidskriftsartikel (refereegranskat)abstract
- A titanium implant in which a conduit is gradually filled with ingrowing bone (the Bone Harvest Chamber) has been modified to allow continuous local treatment of the conduit tissue with biochemical agents. Implants were inserted bilaterally in rabbit tibiae. The tissue content of the bone ingrowth conduits was studied with histology, 99mTc-MDP scintimetry and measurements of total calcium content. Bone was formed in the conduit by endochondral formation starting at both ends and continuing until fusion in the middle. After 2 weeks the bone had not yet met in the middle where fibrous tissue was seen. In eight animals 3H-proline was applied via one of the chambers, with the contralateral chamber as a saline-treated control. The collagen of the harvested tissue from the 3H-proline treated side had a 3H-hydroxyproline content 1000 times greater than had the control side. The 'drug test chamber' makes possible the study of local effects of drugs on healing of mature bone in vivo.
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| 4. |
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| 5. |
- Henriksson, L, et al.
(författare)
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Assessment of congestive heart failure in chest radiographs. Observer performance with two common film-screen systems.
- 1990
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Ingår i: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 31:5, s. 469-471
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Tidskriftsartikel (refereegranskat)abstract
- The effect of observer variations and film-screen quality on the diagnosis of congestive heart failure based on chest radiographs was studied in 27 patients. For each patient, two films were exposed, one with the Kodak Lanex Medium system and one with the Agfa MR 400 system. The films were presented to three observers who assessed the presence of congestive heart failure on a three-graded scale. The results showed no significant difference between the two systems but large systematic differences between the observers. There were also differences between the two ratings by the same observer that could not be explained by the film-screen factor. It is concluded that the choice between these two systems is of little importance in view of the interobserver and intraobserver variability that can exist within the same department.
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| 6. |
- Hicklin, S. P., et al.
(författare)
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Theoretical knowledge in implant dentistry for undergraduate students
- 2009
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Ingår i: EUROPEAN JOURNAL OF DENTAL EDUCATION. - : Wiley. - 1396-5883 .- 1600-0579. ; 13, s. 24-35
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Tidskriftsartikel (refereegranskat)abstract
- Implant therapy has evolved into an important part of daily dental practice. Appropriate knowledge of diagnostic and therapeutic options with dental implant therapy is, therefore, mandatory for dental students. The present consensus paper describes the theoretical knowledge as a foundation to the teaching of implant dentistry at the undergraduate level. Students need a solid basic knowledge about biological prerequisites and clinical procedures leading to successful implant treatment and, in particular, an understanding of the importance of embedding implants into the overall treatment concept. Among others this includes aspects of bone and soft tissue integration of dental implants, as well as aspects of materials that are used in implant dentistry. The students should also be able to differentiate between low, medium and high-risk situations, which assumes that they have knowledge about a proper clinical examination. Furthermore, the students need to be able to inform the patient about the different treatment options and their advantages and disadvantages. Frequently, a choice has to be made between an FDP anchored on teeth and an implant-borne reconstruction. This is highly influenced by the long-term prognosis of the different treatment options. In order to perform implant placement in uncomplicated cases and to give appropriate patient information, adequate knowledge of surgical procedure and surgical complications is mandatory. Furthermore, the dentist needs to be competent in evaluating clinical situations and in advising patients about the suitability of the different options, e.g. removable or fixed reconstructions. It is possible that peri-implant tissue destruction may be a more common finding during long-term service of implant-borne reconstructions than was previously believed. The dentist needs knowledge about etiology and pathogenesis of peri-implantitis and should know how to provide an effective maintenance care programme. In cases of peri-implantitis the student should be knowledgeable regarding suitable interventions.
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| 7. |
- Lang, Niklaus P., et al.
(författare)
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Implant surfaces and design (Working Group 4)
- 2009
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Ingår i: Clinical Oral Implants Research. - 0905-7161 .- 1600-0501. ; 20 Suppl 4, s. 228-231
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Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: The remit of this working group (4) was to update existing knowledge on the effects of implant surface topography, composition and design on bone integration and re-osseointegration. MATERIAL AND METHODS: Based on five narrative reviews that were performed following a defined search strategy, clinical implications as well as suggestions for further research have been formulated. RESULTS: The results and conclusions of the review processes in the following papers together with the group consensus, clinical implications and directions for future research are presented: 1. Effects of titanium surface topography on bone integration. 2. Effects of implant surface coatings and composition on bone integration (two reviews). 3. Effects of different implant surfaces and designs on marginal bone level alterations. 4. Re-osseointegration onto previously contaminated implant surfaces.
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| 8. |
- Lang, Niklaus P., et al.
(författare)
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Implant surfaces and design (Working Group 4)
- 2009
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Ingår i: Clinical Oral Implants Research. - : Blackwell Munksgaard. - 0905-7161 .- 1600-0501. ; 20 Suppl 4, s. 228-231
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Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: The remit of this working group (4) was to update existing knowledge on the effects of implant surface topography, composition and design on bone integration and re-osseointegration. MATERIAL AND METHODS: Based on five narrative reviews that were performed following a defined search strategy, clinical implications as well as suggestions for further research have been formulated. RESULTS: The results and conclusions of the review processes in the following papers together with the group consensus, clinical implications and directions for future research are presented: 1. Effects of titanium surface topography on bone integration. 2. Effects of implant surface coatings and composition on bone integration (two reviews). 3. Effects of different implant surfaces and designs on marginal bone level alterations. 4. Re-osseointegration onto previously contaminated implant surfaces.
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| 9. |
- Mattheos, N., et al.
(författare)
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Teaching and assessment of implant dentistry in undergraduate and postgraduate education: a European consensus
- 2009
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Ingår i: EUROPEAN JOURNAL OF DENTAL EDUCATION. - : Wiley. - 1396-5883 .- 1600-0579. ; 13, s. 10-17
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Tidskriftsartikel (refereegranskat)abstract
- This paper constitutes a summary of the consensus documents agreed at the First European Workshop on Implant Dentistry University Education held in Prague on 19-22 June 2008. Implant dentistry is becoming increasingly important treatment alternative for the restoration of missing teeth, as patients expectations and demands increase. Furthermore, implant related complications such as peri-implantitis are presenting more frequently in the dental surgery. This consensus paper recommends that implant dentistry should be an integral part of the undergraduate curriculum. Whilst few schools will achieve student competence in the surgical placement of implants this should not preclude the inclusion of the fundamental principles of implant dentistry in the undergraduate curriculum such as the evidence base for their use, indications and contraindications and treatment of the complications that may arise. The consensus paper sets out the rationale for the introduction of implant dentistry in the dental curriculum and the knowledge base for an undergraduate programme in the subject. It lists the competencies that might be sought without expectations of surgical placement of implants at this stage and the assessment methods that might be employed. The paper also addresses the competencies and educational pathways for postgraduate education in implant dentistry.
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| 10. |
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