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Results for “Periodontal Splints”

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At least 397 records · Page 22Linked to original sources
PubMed2005

Abutment load transfer by removable partial denture obturator frameworks in different acquired maxillary defects.

STATEMENT OF PROBLEM: Excessive stress on abutment teeth adjacent to a maxillary resection defect during loading of partial denture obturator frameworks may shorten the life of the teeth. PURPOSE: The aim of this study was to photoelastically compare the forces exerted on the supporting structures of abutment teeth in 3 differently sized surgical resections with removable partial denture designs used to restore such maxillectomy defects. MATERIAL AND METHODS: Composite photoelastic models were constructed of a human maxilla that had undergone each of 3 maxillectomies: partial, radical, and radical involving the contralateral premaxilla. The abutment teeth included all remaining anterior teeth, the first premolar, and second molar, except the radical maxillectomy, which included the contralateral premaxilla where all remaining teeth were used as abutment teeth. All abutment teeth were restored with complete metal crowns, and removable partial denture frameworks were fabricated. Loading zones were selected according to the resection, and a 10-lb load was applied at each load point. The resulting stresses were observed and recorded photographically in a circular polariscope. The 2 teeth adjacent to the resection were then splinted, and the loading regimens were repeated. RESULTS: Without splinting, loads closer to the defect produced lingual tipping of the teeth adjacent to the resection and a mesial tipping tendency of the second molar. The tipping effects were greatest in the model with the largest resection. Splinting reduced tipping of the teeth adjacent to the resection and produced more uniform stress around these 2 abutment tooth roots for all of the models. CONCLUSION: The results of this in vitro study suggest that splinting the 2 teeth adjacent to a resection defect improves stress distribution around the roots during loading. This could increase the clinical life of the abutment teeth.

Birefringence↗
PubMed2002

Localized gingival recession caused by a C-PAP mask: a case report.

This case report describes a localized gingival recession on the labial of tooth # 6 caused by the nasal mask of a C-PAP (Continuous Positive Air Pressure) machine. The patient was diagnosed with obstructive sleep apnea (OSA). Treatment consisted of night-time use of a C-PAP machine. The patient noticed sudden exposure of the root surface on no. 6 and sought evaluation by his family dentist. He was referred to a periodontist for evaluation. A subepithelial connective tissue graft was performed to repair the defect. A maxillary bite splint with a buccal and apical extension to protect the grafted area was constructed. The patient is able to wear the C-PAP mask and protective splint concurrently for successful treatment of his OSA and maintenance of the newly grafted connective tissue. We as dental practitioners can use this information to evaluate the etiology of gingival recession, especially those occurring in patients with OSA.

Connective Tissue↗
PubMed1975

[Bacteriological studies of removable splints and dentures].

The risk of germ contamination through already used dental replacement cannot or only with difficulties be solved by disinfection. As to new dental replacements, which may constitute a germ vehicle between the dental laboratory and the dental office, specific consequences can be drawn. It is tried to explain where contamination may start so that such contamination can be prevented.

Bacteria↗
PubMed2005

An accurate, single, platform-level impression technique for the fabrication of prosthetic restorations on dental implants.

The possibility of restorative inaccuracies increases with the number of impressions taken and subsequent models poured. Herein we describe a unique, splinted, dual-arch pick-up impression technique using abutment components instead of transfer copings. In our experience, this permits the fabrication of a definitive restoration as a result of a single impression.

Dental Abutments↗
PubMed2005

[Injuries to permanent teeth. Part 2: Therapy of avulsion].

The present paper describes the current treatment philosophy of dislocated or avulsed permanent teeth at our school. Splinting and medication (root canal treatment, systemic antibiotics, etc.) are targeted to minimize the initial inflammatory reaction and to reduce post-traumatic complications such as pulp necrosis and/ or external root resorption.

Adolescent↗
PubMed1998

Preimpregnated, fiber-reinforced prostheses. Part II. Direct applications: splints and fixed partial dentures.

This article is the second in a series that describes the development, physical properties, and clinical applications of fiber-reinforced composite materials. The development of fiber-reinforced composite technology has opened new avenues for fabricating direct tooth replacements and splints that are esthetic and simple in design and execution and have the potential for excellent durability. Splinting techniques for hypermobile dentitions or postorthodontic retention and the replacement of anterior and posterior teeth using a groove preparation, a denture tooth, and a fiber-reinforced composite framework will be described.

Composite Resins↗
PubMed1996

Stress analysis of a cantilevered fixed partial denture with normal and reduced bone support.

A two-dimensional finite element model was constructed to analyze the simulated mechanical behavior of a cantilevered fixed partial denture. The variations of the models were made by altering the degree of bone support, the number of splinted abutments, and the length of the pontics. High stress concentrations were observed around the connectors of the fixed prosthesis and the tooth closest to the cantilever. Reduced bone support increased the deflection and stress concentrations. There was reduction in displacement and stress concentration when the teeth were splinted together. To improve the prognosis of the fixed partial denture cantilever, the number of abutments should be increased and the number of pontics decreased.

Alveolar Bone Loss↗
PubMed2006

Biomechanical effects of splint types on traumatized tooth: a photoelastic stress analysis.

This study was undertaken to assess the effect of splint type on stresses occurring around traumatized tooth by photoelastic stress analysis. Three semi-rigid splint types--a wire-composite splint, fiberglass splint and titanium trauma splint--were utilized for comparisons. Extracted left upper central and lateral incisors and the canine tooth of an otherwise healthy patient were embedded equidistantly in photoelastic resin. For all cases studied, a static axial and 20 degrees oblique force of 100 N was applied on the lateral incisor in separate sessions. The experiments were undertaken without any splint application (unsplinted, control) after which the splints, adhesively bonded to the labial aspects of teeth, were consecutively tested. During each loading sequence, generation of isochromatic fringes was observed in the field of a polariscope, and photographed by a digital camera. Quantification of fringes was performed on magnified images, transferred to a PC. Under vertical loading, the highest stresses in the apical regions were observed for the unsplinted and ribbond-splint groups, whereas the lowest fringes occurred with the use of orthodontic wire as a splinting medium. Titanium trauma splint had absolutely no effect on reduction of stresses, as the fringe orders were slightly higher than the unsplinted lateral tooth. The use of orthodontic wire resulted in lowest fringe orders around the traumatized tooth.

Biomechanical Phenomena↗
PubMed2005

Short dental implants: a literature review and rationale for use.

Implant prostheses are often used to restore partially or completely edentulous patients. The posterior regions of the mouth often have less available bone height than the anterior regions. The bone density of the remaining bone after tooth loss is often less in the posterior regions than the anterior region of the mouth. A review of the literature reveals implants shorter than 10 mm often have a higher failure rate than longer implants. These complications may be related to an increase in crown height, higher bite forces in the posterior regions, and less bone density. As a result, biomechanical methods to decrease stresses to the implant-bone interface are warranted. The forces to the implants may be reduced by eliminating lateral contacts in mandibular excursions and eliminating cantilevers on the prosthesis. The area of forces applied to the prosthesis may be increased by increasing the implant number, increasing the implant diameter, increasing the implant design surface area, and splinting the implants together. As a result of these biomechanical methods to decrease stress, Misch, et al reported a 99% implant survival with 7-mm and 9-mm implants in the posterior regions of the jaws. It is interesting to note that the natural teeth follow a similar biomechanical approach to accommodate the higher bite forces in the posterior regions of the mouth. The molar teeth do not become longer than the anterior teeth. The diameter is increased, the design of the roots is different, and the roots are splinted together. The anterior teeth have incisal guidance and eliminate posterior lateral forces to the posterior teeth in all mandibular excursions. A similar biomechanical approach is logical for posterior implants, especially when shorter implants are used to support the prosthesis.

Alveolar Bone Loss↗
PubMed1997

Facial approach to stabilization of mobile maxillary anterior teeth with steep vertical overlap and occlusal trauma.

The necessity for splinting and the advantages of some types of permanent, semipermanent, and temporary splinting are given. Specific step-by-step instructions are given for a special purpose splint that can be used for stabilizing mobile maxillary teeth when the patient has thin teeth faciolingually and a steep vertical overlap. This can be the treatment of choice for such patients.

Acid Etching, Dental↗
PubMed2006

Root fracture of immature permanent incisors--a case report.

This 7-year-old girl experienced pain in her upper central incisors following a fall to the ground. Radiographic examination revealed immature upper central incisors with mid-root oblique and horizontal root fractures. Splinting was performed. When at 3 months, an electric pulp test was positive for both injured teeth, and after 5 months, the fracture lines had disappeared on the radiographs, the splint removed. After 2 years, clinical examination showed normal tooth color and position, with a positive response to the pulp test. Radiographs demonstrated continuous root development, although root canal narrowing was noted at the healed fracture sites.

Child↗
PubMed1993

Local hemostatic technic using a celluloid splint in bleeding disorders.

Controlling hemorrhage from dental treatment in bleeding disorder patients is one of the most serious procedures encountered by the dentist. In the Dental Division, Ramathibodi hospital, dentists use local hemostatic technics combined with replacement therapy, local hemostatic agents and antifibrinolytics in the management of bleeding disorders in dental patients, such as leukemia, ITP, hemophilia. Celluloid splints as an adjunct therapy is very beneficial in controlling hemorrhage in dental procedures as shown by 5 years experience with 278 patients. The advantages are: less expensive, lesser days hospitalized, better outcomes. Presently it is used as a routine technic in dental treatment.

Blood Coagulation Disorders↗
PubMed1987

Temporary intervention: dental splinting and the intragastric bubble.

Morbid obesity is a significant health problem in the United States today. This has resulted in an intensive investigation into temporary interventions for weight control. Dental splinting does not result in long-term weight loss because patients rapidly regain weight following release of jaw fixation. The Garren-Edwards intragastric bubble was equally ineffective in achieving weight loss and was fraught with numerous complications.

Animals↗
PubMedDate not supplied

Within-subject comparison between connected and nonconnected tooth-to-implant fixed partial prostheses: up to 14-year follow-up study.

PURPOSE: This long-term follow-up study aimed to compare the outcome of fixed prostheses supported by teeth and implants and by freestanding implants only. MATERIALS AND METHODS: From prosthesis insertion up to 14 years (mean 6.5 y), 18 patients were followed. Implant-supported prostheses with and without tooth connection were compared within the same jaw. The tooth-implant prostheses were supported by 30 implants and 30 teeth, and the freestanding prostheses were supported by 48 implants. Implant outcome, marginal bone stability, and mechanical complications were recorded. RESULTS: Neither implant mobility nor fractures of any component of the implants were observed. No prosthesis complications were observed, and the same applied for crown cement failure and intrusion of teeth. Only one periapical lesion was detected at the first follow up. The annual change of the marginal bone level around connected and freestanding implants did not differ significantly. The mean marginal bone loss (over the 2 groups) for the first 6 months amounted to 1.08 mm. After the first 6 months, an annual marginal bone loss of 0.015 mm was observed. There was no difference between the 3 connection types (single implant connected to single tooth, multiple implants and/or multiple teeth connected with single connector, and multiple connectors) for the first 6 months or thereafter. The marginal bone loss (over the 3 groups) for the first 6 months was 1.15 mm. After the first 6 months, the annual bone loss (over the 3 groups) amounted to 0.015 mm. CONCLUSION: Based on the results of this study, splinting teeth with implants for implant-supported fixed prostheses did not affect the long-term outcome in comparison to freestanding implants.

Adult↗
PubMedDate not supplied

Effects of prosthesis materials and prosthesis splinting on peri-implant bone stress around implants in poor-quality bone: a numeric analysis.

PURPOSE: A 3-dimensional finite element model consisting of a bone block and 2 simulated premolar crowns supported by 2 adjacent cylindric implants without immediately surrounding cortical bone was generated and used to investigate the effects of prosthesis materials and prosthesis splinting on the peri-implant bone stress under static loads. MATERIALS AND METHODS: The peri-implant maximum equivalent bone stress (von Mises [VM] stress) was evaluated when a vertical or a horizontal load of 1 N was applied to the center of a single resin, gold alloy, or porcelain crown, nonsplinted or splinted to the adjacent crown. RESULTS: The numeric results indicated that: (1) in a single crown, no significant difference could be found in the maximum VM stress between different materials for both vertical and horizontal loading; (2) splinting the crowns reduced the maximum VM stress induced by the horizontal load, and the maximum VM stress increased about 14% for the horizontal loading when the restorative material was changed from gold alloy or porcelain to resin. DISCUSSION: Under the condition of this study's analysis, prosthesis materials of a single crown have insignificant effects on the peri-implant bone stress. Splinting the crowns reduced the peri-implant bone stress under horizontal load, and gold alloy and porcelain each demonstrated less peri-implant bone stress than resin in the splinted crown situation under static horizontal load. CONCLUSION: Splinting the crowns of adjacent implants with relatively stiff restorative materials is recommended for implants surrounded by poor-quality bone.

Alveolar Bone Loss↗
PubMed2003

[Tooth transplantation].

Tooth transplantations provide the option of replacing lost or missing teeth in a biological fashion. On account of their high success rates and primarily in Scandinavian countries, they are a popular alternative to orthodontic or prosthetic treatment--particularly in case of children or young people losing teeth in accidents. Success of the treatment is ensured by corresponding diagnosis and good preoperative planning. Tissue-conserving transplant collection and the corresponding conditioning of the transplant bed are of decisive importance for the regeneration of the pulp and the periodontium. The success of the therapy is also influenced by the type and duration of splinting. Depending on the surgical technique and the transplanted tooth, the success rates are between 78% and 96%. The success criteria of a transplantation are defined clinically and radiologically. The diagnosis for transplantation is made from an orthodontic, endodontic, traumatologic, periodontologic and cardiologic perspective. The present article provides an overview of literature and shows current plantation techniques.

Dental Pulp Necrosis↗
PubMedDate not supplied

An assessment of crown-to-root ratios with short sintered porous-surfaced implants supporting prostheses in partially edentulous patients.

PURPOSE: Implant length, implant surface area, and crown-to-root (c/r) ratio and their relationship to crestal bone levels were analyzed in 2 groups of partially edentulous patients treated with sintered porous-surfaced dental implants. MATERIALS AND METHODS: One hundred ninety-nine implants were used to restore 74 partially edentulous patients with fixed prostheses. Implants were categorized according to their length ("short" versus "long") and estimated surface area ("small" versus "large"). "Short" implants had lengths of 5 or 7 mm, while "long" implants were either 9 or 12 mm in length. "Small" implants had estimated surface areas of < or = 600 mm2, while "large" implants had estimated surface areas > 600 mm2. Other data collected included c/r ratio (measured on articulated diagnostic casts), whether or not the implants were splinted, and standardized sequential radiographs. RESULTS: The mean c/r ratio was 1.5 (SD = 0.4; range 0.8 to 3.0), with 78.9% of the implants having a c/r ratio between 1.1 and 2.0. Neither c/r ratio nor estimated implant surface area (small or large) affected steady-state crestal bone levels. However, implant length and whether the implants were splinted did appear to affect bone levels. Long implants had greater crestal bone loss (0.2 mm more) than short implants; splinted implants showed greater crestal bone loss (0.2 mm more) than nonsplinted ones. These differences were statistically significant. DISCUSSION AND CONCLUSIONS: Sintered porous-surfaced implants performed well in short lengths (7 mm or less) in this series of partially edentulous patients. The data suggested that long implants and/or splinting can result in greater crestal bone loss; longer implants and splinted implants appeared to favor greater crestal bone loss in this investigation. These conclusions are, of course, specific to the implants used and would not be relevant to other implant types.

Adult↗