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Results for “DENTAL IMPLANTATION”

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At least 1,135 records · Page 63Linked to original sources
PubMed1994

Linear tomography in conjunction with pantomography in the assessment of dental implant recipient sites.

Tomography provides a three-dimensional unobstructed and anatomically accurate picture of the region being viewed. Tomography is a radiographic technique in which a "slice" or section of a given internal body structure is imaged in a pre-determined plane. The advantage of utilizing a tomographic evaluation along with a pantomographic survey is that the clinician may examine the exact position or depth in all three planes of visualization. This radiographic modality can also reveal the quality and quantity of alveolar bone in a pre-determined implant site. This information would allow the clinician better to diagnose, plan treatment, and place dental implants more precisely. Therefore, the utilization of laminar or computerized tomography along with pantomography for more precise visualization and accurate measurement of available alveolar bone of the buccal-lingual and labial-palatal perspective will be discussed and illustrated.

Alveolar Bone Loss↗
PubMed2000

A comparison of written and multimedia material for informing patients about dental implants.

A study was undertaken to compare the effectiveness of an information leaflet with a multimedia program in informing potential implant patients attending a dental hospital. The results show that both methods of presenting information are effective in informing patients; however, where the information to be presented is visual in nature, a multimedia presentation can have a more positive short-term effect than an equivalent leaflet.

Chi-Square Distribution↗
PubMed2006

The effect of shot blasting and heat treatment on the fatigue behavior of titanium for dental implant applications.

OBJECTIVES: The effect of shot blasting treatment on the cyclic deformation and fracture behavior of a commercial pure titanium with two different microstructures; equiaxed (alpha-phase) and acicular (martensitic alpha'-phase) was investigated. METHODS: Fatigue tests were carried out in artificial saliva at 37 degrees C. Cyclic deformation tests were carried out up to fracture and fatigue crack nucleation and propagation were analysed. Residual stresses were determined by means of X-ray diffraction. RESULTS: The results show that shot blasting treatment improves fatigue life in the different microstructures studied. The equiaxed phase has improved mechanical properties compared to the acicular one. Despite the fact that control of the variables of shot blasting is not precise because of the nature of the treatment, it improves the fatigue life by the fact that the initiation site of the fatigue crack changes from the surface of the specimen to the interior of the shot blasted specimen. This is a consequence of the layer of compressive residual stresses that the treatment generates on titanium surfaces. The acicular morphology of the martensite favors crack propagation along the interface of the alpha' plates. SIGNIFICANCE: Shot blasting, which is widely used on titanium dental implants in order to favour their osseointegration, can also improve their fatigue resistance.

Compressive Strength↗
PubMed2001

[Clinical and radiographic evaluation of 108 dental implants after 1-year loading].

OBJECTIVE: To evaluate the clinical outcomes and a possible correlation between peri-implant mucosal inflammation and marginal bone loss in a group of Chinese patients who received IMZ and Frialit-2 implants one year after restoration. METHODS: The clinical and radiography parameters of 108 IMZ and Frialit-2 dental implants in 70 patients were measured. RESULTS: There were no signs of mobility and peri-implant radiolucencies in any of the implants. The average bone loss adjacent to implants was (0.63 +/- 0.78) mm. The prevalence of peri-implant mucosal inflammation, as indicated by suclus bleeding index (SBI) of 1.0 or more, was 32.9%. Significant correlation was found between mucosal inflammation and bone loss. The severely inflamed sites experienced greater bone loss than that of healthy or slightly inflamed sites (P < 0.05). In 92% of sites, plaque index (PLI) of more than 1 was measured on implant surfaces. The periodontal status of the remaining natural teeth in each subject was evaluated using the community periodontal index of treatment need (CPITN). Of the 70 examined patients, 15 patients needed oral hygiene instruction, 44 needed scaling and root planing, 8 patients needed periodontal surgical therapy, and only 3 did not need any periodontal treatment. CONCLUSIONS: The 1-year outcomes from this patient series indicated that IMZ and Frialit-2 implant provide satisfactory clinical results. One of the etiologic factors of alveolar bone loss around implants seems to be plaque-associated marginal inflammation. Improvement of oral hygiene, elimination of marginal tissue inflammation, and proper treatment of periodontal disease of natural teeth are needed for maintaining the implants in these observed subjects.

Adolescent↗
PubMed2000

Surgical guide for dental implant placement.

Restorative problems with less than desirable implant placement can be challenging. A procedure is presented for the fabrication of a surgical guide stent that dictates placement of dental implants. This surgical guide can enhance implant placement in an efficient and acceptable manner so that final restorations can be properly contoured and esthetic.

Dental Implantation, Endosseous↗
PubMedDate not supplied

Effect of membranes and porous hydroxyapatite on healing in bone defects around titanium dental implants. An experimental study in monkeys.

The purpose of the present study was to examine the effect of treating bony craters around titanium dental implant with polytetrafluoroethylene membranes (PTFE), with and without grafting of hydroxyapatite (HA), and with HA alone. 4 standardized bone defects were prepared in the alveolar ridge of edentulous areas in each of 7 monkeys. A titanium implant was then placed centrally in each defect, and in each monkey, the defects were treated with 1 of the following 4 treatment modalities: (1) coverage with PTFE membrane; (2) grafting of HA and covering with a PTFE membrane; (3) HA grafting; (4) no treatment. Following a healing period of 12 weeks, all animals were sacrificed and mesio-distal ground sections of the treated areas were prepared. The histological analysis showed that all bone defects around the implants treated with PTFE membranes and 5 of the defects treated with HA and PTFE membranes were completely filled with new bone. The defects treated with HA alone and thecontrol defects with no treatment only demonstrated new bone formation in the bottom of the defects. The results suggest that bone defects around titanium implants can be treated wuccessfully with PTFE membranes.

Alveolar Bone Loss↗
PubMed1996

Transversal fixation of restorations in combination with the Octa abutment of the ITI Dental Implant System.

In aesthetically demanding locations of the dentition, the replacement of a single tooth by means of an oral implant is often difficult because of technical limitations of the abutments systems used. The transversal Fixation System in combination with the Octa abutment of the ITI Dental Implant System presents a novel development to overcome these limitations. The report describes the engineering and design of this technical development.

Dental Abutments↗
PubMed2001

Mandibular reconstruction with fibula osteoseptocutaneous free flap and osseointegrated dental implants.

The fibula osteoseptocutaneous free flap is ideal for reconstruction of composite mandible defects. Osseointegration is possible and advantageous. Primary osseointegration of dental implants is a safe and reliable procedure in selected groups of patients, promoting early total oral rehabilitation with restoration of both function and cosmesis. Further studies are necessary to assess the specific indications for osseointegration teeth in patients with malignant tumors and in those patients who have received radiation therapy.

Adult↗
PubMed1975

Methodology and criteria in the evaluation of dental implants.

This study was designed to develop an inexpensive, reproducible method for studying the reaction of the tissues of the oral cavity to the endosseous implant. Thirty-six guinea pigs, three materials (Teflon, Vitallium, and Titanium 6Al-4V), two observation periods (two and 12 weeks), and two implant designs (one with exposure to the oral cavity and one without exposure to the oral cavity) were used. The inflammatory response was significantly greater in the exposed implants than in the unexposed implants. In the implants that were exposed 12 weeks, there was a strong interrelationship between severe inflammation, bacteria, and epithelial invagination. These factors are significant causes for failures of implants.

Alloys↗
PubMed2003

Dental implants: maintenance, care and treatment of peri-implant infection.

Osseointegration is becoming increasingly routine in the rehabilitation of partially or fully edentulous patients. However, the surrounding tissues may be subject to inflammatory conditions similar to periodontal disease and so require maintenance. This article discusses the background, aetiology, diagnosis of peri-implant diseases, and the maintenance, care and treatment of peri-implant infection in osseointegrated implants. Three case studies are presented to illustrate points in the care of implants.

Adult↗