[Simultaneous splinting of transradicularly fixed teeth].
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The strategic goal is the complex prosthetic rehabilitation for a period of at least 10 years. Thorough oral examination is the basis of differential indication and treatment planning. The pretreatment is an integral part of the therapy. The construction must take into consideration the following facts. The periodontal support is in general superior to the gingival supprt (dependence on incomplete dentition). Primary splinting is in general superior to secondary splinting. The denture skeleton must be stable. The prosthesis should be constructed in such a manner that it can be extended, adjusted and rebased. The denture skeleton and the connectors should not cover the marginal gingiva. Denture sore is caused by mechanical irritation and infection. Mouth and prosthesis hygiene is of prime importance also from the viewpoint of caries prevention and periodontal prophylaxis.
Combined treatment was studied of 169 patients with chronic generalised periodontitis in moderate or severe stages, including local pharmacological and laser therapy, selected teeth grinding, transdental implantation, splinting, immediate denture with preliminary collagen plastics of alveolar bone. Positive follow-up results confirmed by experimental data have been received.
Although comprehensive orthodontic treatment cannot preclude the possibility of periodontal disease developing later, it can be a useful part of the overall treatment plan for a patient who already has periodontal involvement. A careful clinical examination must determine the patient's dental health status, including any existing destruction or deficiencies of the teeth and their support, as well as the patient's ability to achieve and maintain good overall oral hygiene. Two major criteria should be considered in the treatment of these patients: (1) the patient should be seen frequently for periodontal maintenance and (2) minimal orthodontic forces should be applied. Segmented archwires could be used for the treatment mechanics. After treatment, splinting of the teeth is necessary both short- and long-term. With this orthodontic approach, both dental esthetics and function improve and can be maintained. A male patient, 50 years of age, with severe periodontal involvement was referred to the authors' clinic, from the periodontal department, for treatment. The mandibular incisors were intruded by using segmental archwires. At the end of treatment, permanent retention was required due to the severe bone loss.
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Panoramic, bitewing and periapical radiography and probing for measurement of the marginal bone level were compared. Altogether 237 sites of 23 patients were examined. Radiographs were taken with a splint containing steel balls to allow calculation of the enlargement of the radiographs. Probing was done before and during flap surgery using the same splint. The open bone measurement represented the true value. All radiographs were assessed by 5 observers. The mean enlargement of panoramic radiography was 27% in the upper and 26% in the lower arch. For bitewing and periapical radiography, it was 8% in the upper and 4-5% in the lower arch. All methods underestimated the bone loss. Probing bone level before surgery was most accurate, deviating at most 5% from the true value. Periapical radiography was more accurate than panoramic and bitewing radiography (p less than 0.001). Panoramic radiography presented a slightly lower mean accuracy than bitewing radiography (p less than 0.05). The underestimation of the bone loss ranged from 13 to 32% in orthopantomograms, 11-23% in bitewing and 9-20% in periapical radiographs. The interobserver variation of the radiographic methods was substantial.
Although prognosis for the avulsed tooth is guarded, replantation, followed by a brief period of splinting and endodontic therapy, is suggested. Minimal extraoral period, minimal manipulation of the root surface and alveolus, and moist storage for the tooth are identified as factors that minimize resorption. Education of coaches, teachers, and all dentists in the technique of replantation is encouraged.
Severe alveolar atrophy is a common sequel to the extraction of teeth from the mandible. This atrophy, coupled with the associated superficiality of adjacent muscle attachments (Fig. 1a) precludes the provision of a stable, retentive prosthesis. This paper discusses some of the operations which have been designed to alleviate this considerable clinical problem and considers three aspects of the sulcoplasty procedure which in the author's opinion are crucial to its success. The paper also introduces the use of lyophilised porcine skin to dress the surface deficit created during surgery, thus obviating the need for skin grafting.
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