Implant Failure: Regional versus Cumulative Evaluation

In this paper the success rate of implant therapy in various bone regions is discussed. The objective is to determine whether differences existed in success rates of cylinder implants placed in different areas in the both maxilla and mandible. Forty four patients have been treated and reviewed five years after the placement of the fixed prosthetic restoration. The patients were provided with a total of 92 implants. Results from this study show very low survival rate for implants placed in anterior region of maxilla (55.6%) after five years. It is concluded that simple cumulative follow up studies do not entirely correspond to actual situations, positioning the implants has an important role in the planning of the implant therapy and that important factor for force compensation is not only the surrounding bone density, but also the region of the jaw where the implants are placed

Implanto-Prosthetic Rehabilitation of the Mandible by Means of Two Implants

Edentulousness is a considerable problem in Croatia. So far prevention has not become the most important part of the dental profession. On the other hand,poor medical knowledge, reduced rights concerning health insurance costs as well as an increasing number of impoverished people in Croatia has resulted in postponed prosthetic rehabilitation. For the above mentioned reasons the Croatian people suffer from premature loss of their teeth. Also lower jaw atrophy occurs, which makes prosthetic rehabilitation even more difficult to achieve. In spite of some disadvantages, the double-implant borne prosthetic suprastructure has proved to be a simple and good solution to the patient\u27s problem, mainly because it is cost-effective. This particularly applies to Croatia patients. Over the last five years we have placed double -implants in 26 patients, in the anterior region of the mandible. The implants were placed in the region of the lower canine or slightly more mesially. Severe atrophy was determined in 13 patients (50%) which impeded their complete denture wearing even before the implant placement started. However, we made up for the loss in two patients by placing the implants again. This time we placed them slightly more mesially. We made one borne implant complete denture for one patient because the examination revealed severe atrophy in one segment of his mandible. In addition since the osseointegration prognosis for this patient was questionable we decided against any additional surgical treatment. Since the belts of the attached gingiva in our patients were wide enough and the diameters of the implants were not very long, no vestibuloplasty was necessary. We installed ITI, IMZ, ASTRA and Ankylos implants. All systems proved to be equally functional

New toothpaste to deal with dentine hypersensitivity : double-blind randomized controlled clinical trial

Objectives: The purpose was to evaluate a combined effect of active ingredients contained in new toothpaste in reducing dentine hypersensitivity. Methods: The tested toothpaste contained active ingredients potassium nitrate (5.00%) and zinc citrate (0.50%). Pain to water stimulus and blowing air was reported on hypersensitive teeth and measured using the VAS (Visual Analogue Scale). The degree of pain to water stimulus was detected after each subject drank a few sips of water which was boiled to the room temperature. Data were collected on each subject's dental history. Results: A significant reduction in dentine hypersensitivity (26-29% after 2 weeks versus 40% after 4 weeks) was detected in the tested group. The controls also showed significant reduction to both stimuli, but at lower rate. A statistically significant difference to blowing air and water stimuli showed the highest impact for the tested group after 4 weeks (P = 0.033, P = 0.006). Conclusion: This study supports the efficacy of the tested toothpaste in reducing the phenomenon of dentine hypersensitivity after 4 weeks of usage