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PubMed1996

Combination acid-etched and coping-superstructure fixed partial prosthesis.

A conservative method of replacing missing teeth is described. The fixed partial denture incorporates a resin-bonded retainer for the intact tooth and a telescopic coping for the carious or fractured tooth. A permanently cemented coping beneath a provisionally cemented superstructure provides the opportunity to recement the prosthesis if the acid-etched retainer is debonded. The advantages of this technique include conservation of enamel on the intact abutment and protection from leakage caused by dissolution of temporary cement on the abutment with a telescopic coping.

Acid Etching, Dental↗
PubMed2001

[Repair and revision 4. Cracked tooth and crown fractures: diagnostics and treatment].

Trauma to the teeth can result in the formation of cracks in the crown or root of the tooth. The location and the extent of these cracks determine the proper treatment choice. This treatment is oriented towards saving pulp vitality and/or tooth integrity. In this paper the diagnosis of these cracks is described as well as the desired treatment. These are discussed relative to the location of the cracks, namely in the clinical crown of the tooth, resulting in enamel infraction, cracked tooth and crown fractures, and in the root of the tooth, resulting in a vertical or horizontal root fracture.

Dental Restoration, Permanent↗
PubMed1995

A report of anterior In-Ceram restorations.

Thirty-one patients were restored with 35 anterior crowns and 7 anterior fixed partial dentures. The restorations were fabricated in In-Ceram, an all-porcelain ceramic material. The restorations were evaluated for fractures, tooth wear, recurrent caries, gingival inflammation and tooth sensitivity in a 21-month follow-up. Three of the 35 crowns fractured. The failure for the crowns was 8.5%. The remaining crowns provided excellent function and aesthetics. They had been in the mouth between 2.5 and 21 months. There were no fractures in the 7 fixed partial dentures. These had been in service between 4.5 and 21 months. More long-term clinical studies are recommended to determine the survival of In-Ceram fixed partial dentures.

Adolescent↗
PubMed2004

Impacted tooth in mandibular fracture line: treatment with closed reduction.

PURPOSE: Most mandibular fractures occur because of blunt trauma. In some cases, the mandible can be weakened by the presence of an unerupted or impacted tooth. The fate of this tooth in the fracture line and its effects on bone healing remain an important outcome event. MATERIALS AND METHODS: In this study, we analyzed the records of 117 patients with a total of 121 fractures having an unerupted tooth remaining in the fracture line who were treated and followed by the Dental Faculty of Ankara University between 1986 and 1996. All were open fractures, and none of the patients had a history of an acute inflammatory episode related to the unerupted tooth before the injury. Intermaxillary fixation was used in all cases. RESULTS: Three of the patients subsequently required open reduction with internal fixation. The unerupted tooth was not extracted in any patient. The fixation was maintained for an average of 45 days and followed up for 3 months. No complications were encountered. CONCLUSION: According to these results, we suggest that asymptomatic impacted teeth in the fracture line of uncomplicated mandible fractures do not cause delayed healing when treated with closed reduction.

Adolescent↗
PubMed1984

The effect of orthodontic extrusion on traumatically intruded teeth.

The management of traumatically intruded permanent incisors is controversial. Some authors suggest a decreased incidence of ankylosis in cases treated with orthodontic extrusion. The purpose of this study was to examine two common management techniques for traumatic intrusion, orthodontic extrusion, and observation for re-eruption. The four first premolars of three shepherd dogs were traumatically intruded with a mallet while a holding device was used to prevent tooth fracture. Five to 7 days following the injury, orthodontic force was applied unilaterally while the contralateral tooth served as the untreated control. To facilitate serial periapical radiography, x-ray jigs were fabricated for each animal and tantalum implants were placed in the bone distal to the permanent canine and first and second premolars. Observations included radiographic measurement of tooth movement, clinical estimates of tooth mobility, and radiographic and histologic assessment of root resorption, ankylosis, and periapical pathosis. The amount of traumatic intrusion varied from less than 0.5 to 4.1 mm. Following 11 to 13 weeks of force activation, 10 of 12 traumatized teeth showed clinical, radiographic, and histologic evidence of ankylosis irrespective of orthodontic treatment. Whereas the ankylosed teeth did not move with orthodontic forces, the teeth used for force application were orthodontically intruded 1.7 to 6.5 mm. When the injury to the tooth was severe, orthodontic extrusion had little effect on repositioning of the injured tooth but resulted in undesirable movement of the anchorage teeth. When the injury was less severe, orthodontic forces facilitated repositioning of the affected tooth.

Animals↗
PubMed1994

Incidence of dentoalveolar injuries in hospital emergency room patients.

A retrospective survey over one year of a hospital emergency room population, seen at an oral and maxillofacial surgery clinic, found 271 patients (4.6% of the total population) with dentoalveolar injuries. A very large number of injuries occurred to children between the ages of 0 and 5 years (42.1%), and there was a significant number of injured patients in the adult population (19.1%). The ratio of male to female was 1.9:1. The leading cause of injury was falls (59.8%). The largest number of injuries was seen during summer. The diagnoses were lateral luxation (27.3%), concussion (17.3%), exarticulation (14.3%), tooth fracture (12.5%), intrusive luxation (11.1%), fracture of alveolar process (7.4%), extrusive luxation (3.7%), and cases with more than one diagnosis (6.3%). Most of the involved teeth were maxillary central incisors, in both dentitions.

Adolescent↗
PubMed2004

A systematic review of the survival and complication rates of fixed partial dentures (FPDs) after an observation period of at least 5 years.

OBJECTIVES: The objective of this systematic review was to assess the survival of cantilever fixed partial dentures (FPDs) and the incidence of biological and technical complications. METHODS: An electronic MEDLINE search supplemented by manual searching was conducted to identify prospective and retrospective cohort studies on FPDs with a mean follow-up time of at least 5 years. Patients had to have been examined clinically at the follow-up visit. Assessment of the identified studies and data abstraction was performed independently by two reviewers. Failure and complication rates were analyzed using random-effects Poisson regression to obtain summary estimates of 10-year survival proportions. RESULTS: From a yield of 3658 titles and 211 abstracts, 81 articles were selected for full-text analysis, finally resulting in 13 studies that met the inclusion criteria. Meta-analysis of these studies resulted in an estimated survival rate of cantilever FPDs of 81.8% (95 percent confidence interval (95% CI): 78.2-84.9%) and success rate (free of all complications) of 63% (95% CI: 54.7-70.2%) after 10 years. The most common biological complication was loss of pulp vitality (32.6%) followed by caries at abutment teeth (9.1%). After a 10-year observation period 2.6% of the FPDs were lost as a result of dental caries and 1% due to recurrent periodontitis. The most frequent technical complication was loss of retention (16.1%) followed by material fractures (5.9%). The cumulative incidence of fractures of abutment teeth was 2.9% and 2.4% of the FPDs were lost as a result of abutment tooth fracture after an observation period of 10 years. CONCLUSION: This systematic review on cantilever fixed partial dentures indicated that survival and success rates of cantilever fixed partial dentures were lower than those of conventional end-abutment supported FPDs described in a review by Tan et al. (2004) and biological and technical complications were frequent.

Algorithms↗
PubMed1976

[Experimental horizontal fractures of front tooth roots and their endodontic endosseous pin fixation in monkeys].

Pathologically movable anteriors with horizontal root fracture can be fixed by endodontal bone pins, unless the fracture is located in the cervical third of the root canal. The apical root fragment needs to be removed for fixation. As the anatomic conditions in monkeys do not permit adequate preparation of the root canal required for endodontal pin fixation, the histological findings can be transferred to man to a limited extent only.

Animals↗
PubMed2000

Bunk beds--a still underestimated risk for accidents in childhood?

UNLABELLED: A retrospective analysis of 218 bunk-bed accidents and a random sample survey with 991 family interviews were performed in order to establish guidelines for bunk-bed accident prevention. Falls from the top bed during sleep (35.1%) or while playing (34.4%) and falling off the ladder (23.2%) are the leading causes of bunk-bed accidents. Of the 218 children, 91 (41.7%) had sustained major injuries, including 3 polytrauma, 7 skull fractures, 44 cerebral concussions, 33 long bone fractures, 2 Lisfranc injuries, and 2 lacerations of the spleen. Of these accidents, 58.3% resulted in minor injuries with 18 fractures in other locations than the long bones or cranial vault, 89 contusions and sprains, 18 skin lacerations and 2 tooth fractures. A total of 23.8% of the accidents occurred in children under 3 years of age. The random sample survey demonstrated that in relation to age groups of children 30.8% (0%-45.8%) of families interviewed had been using bunk beds, with peaks at 3 years (29.8%), 7 years (36.5%) and 11 years (45.8%) of age. Of these bunk beds, 75.3% were equipped with side-rails, 57.3% had placed carpets alongside the bunk bed and 43.0% had used night lights. CONCLUSION: There is only one recommendation: no bunk beds!!!

Accidents↗
PubMed1999

Reattachment of a subgingivally fractured central incisor tooth fragment: report of a case.

A case report of a 9-year-old boy with a fractured maxillary right incisor and ulcerated pulp at the fracture line is presented. On satisfactory completion of a root canal filling one week later, the access cavity was restored with glass ionomer cement. The fragment was reattached by a light activated hybrid composite during the flap surgery. Tetracycline hydrochloride was applied on open root surface for a better healing.

Bisphenol A-Glycidyl Methacrylate↗
PubMed1991

Reattachment of a fractured central incisor tooth fragment.

While the introduction of the acid-etch technique with composite materials has revolutionised the restoration of fractured incisor teeth, it is possible that restoration of such teeth using the fractured fragment may produce a superior result. The technique, with possible advantages and disadvantages, is described.

Acid Etching, Dental↗
PubMed2006

[Application of bolt-like casting post in posterior fixed partial denture].

OBJECTIVE: To study the manipulation procedure and application of a new post-core system in posterior fixed partial dentures. METHODS: Abutment tooth canals were firstly prepared according to respective canal directions and then complete crown preparation was made following standard procedures. The impression of prepared abutment teeth was taken with silicone and specially made syringe. The fixed partial denture and bolt-like post were fabricated respectively and lastly the two parts were glued together in patient after try-in. RESULTS: All the fixed partial denture with the new post-core system did not get loose and there was no abutment tooth fractured after 23 months in use. CONCLUSIONS: This new post-core system could improve retention of the posterior fixed partial denture if the inter-occlusion distance of the abutment tooth was shorter than 3 mm.

Dental Abutments↗
PubMed1993

Chronic focal sclerosing osteomyelitis associated with a cracked tooth. Report of a case.

Chronic focal sclerosing osteomyelitis is a periapical lesion that involves reactive osteogenesis evoked by chronic inflammation of the dental pulp. In most cases, this lesion develops in the mandibular molar region in response to a low-grade infection of the pulp that results from a deep carious lesion. A case is presented in which incomplete tooth fracture was the apparent cause of this type of periapical pathosis.

Adult↗
PubMed1995

[A case of injured unerupted permanent tooth in a child].

Children with trauma visit frequently the department of oral and maxillofacial surgery. The treatment for injured permanent teeth is different from that for injured deciduous teeth. We have experienced a case of a 9-year-old boy with an injured unerupted immature permanent tooth with tooth crown fracture. When the tooth erupted gradually, fractured pieces were removed three times, and indirect pulp capping was performed. Three years after the injury eruption was almost completed and pulp was alive, even though the dental roentgenograph showed obliteration of the crown pulp cavity.

Child↗