Treatment needs of overdenture patients in a longitudinal study: Five-year results

Ettinger, Ronald L.; Taylor, Thomas D.; Scandrett, Forrest R.

doi:10.1016/0022-3913(84)90340-8

Cited by 55 publications

(26 citation statements)

References 15 publications

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“…Other studies indicate that periodontal disease is a major cause of loss of overdenture abutments (6,16), and that pockets 3 3 mm adjacent to the abutment teeth should be eliminated by periodontal surgery (1). In the present study periodontal surgery was not performed.…”

Section: Discussionmentioning

confidence: 99%

“…The main advantages are reported to be a decrease of the progressive resorption of the residual ridges, maintenance of the masticatory performance, and a psychologic benefit for a wearer of complete dentures (4, 5). However, several studies indicate that the supporting teeth are prone to caries and progressive periodontal disease (2,6). One of the reasons for this may be that bacterial colonization beneath a close-fitting denture is enhanced and generally difficult to control for denture wearers (7).…”

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confidence: 99%

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The effect of controlled oral hygiene in overdenture wearers

Budtz-Jørgensen¹,

Thylstrup

1988

Acta Odontologica Scandinavica

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The effect of controlled oral hygiene was studied in 40 patients treated with immediate complete overdentures in one or both jaws. Before prosthetic treatment conservative periodontal treatment was conducted with intensive instruction and motivation in oral hygiene care. Caries and periodontal status were recorded before and 2-4 weeks (day 0), 6 months, and 12 months after prosthetic treatment. However, the patients were seen more frequently for motivation and professional tooth cleaning. The material included 44 overdentures with a total of 92 abutments, with 1-4 abutments in each jaw. Before treatment the overall mean plaque index score was 1.43 +/- 0.68 and the overall mean gingival index score 1.57 +/- 0.53, and on day 0 and after 6 and 12 months the overall mean PlI score was 0.33-0.65 and the overall mean GI score 0.67-0.97. Adjacent to the abutments there was a significant reduction of the PlI and the GI scores from before treatment to day 0 and from day 0 to 6 months after prosthetic treatment (P less than 0.001). There was a significant reduction of pocket depth from day 0 to 6 months and from 6 to 12 months (P less than 0.01). The results of this study have shown that it is possible to maintain teeth as abutments for overdentures in patients with an initial poor dental status.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

The effect of controlled oral hygiene in overdenture wearers

Budtz-Jørgensen¹,

Thylstrup

1988

Acta Odontologica Scandinavica

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“…[3][4][5][6][7] Overdenture therapy may be indicated because the retained abutments can preserve the alveolar bone. 8 Previous literature signifies that mandibular ridge resorption in those who wear overdentures is one-eighth that in those with conventional complete dentures. 9 This may enhance the availability of implant therapy that can be considered as one of the treatment options.…”

Section: Finite Element Stress Analysis Of Overdenture Abutment As a mentioning

confidence: 99%

Finite Element Stress Analysis of Overdenture Abutment as a Function of Crown-to-root Ratio

Tanaka

Wakabayashi

Maezawa

et al. 2006

Prosthodont Res. Pract.

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In partially edentulous patients with considerable loss of tooth structure, it is recommended that a remaining tooth with a C/R ratio greater than approximately 1.5 should be used as an overdenture abutment to minimize lateral occlusal forces. Abstract Purpose:The clinical decision to use abutments for overdentures in cases with loss of tooth structure has not been fully assessed in relation to the periodontal condition. The aim of this study was to investigate the stresses around overdenture abutments with and without crown restoration for various bone heights.Methods: Three-dimensional finite element models of the mandibular right first and second premolars, a periodontal ligament, and one of five alveolar bone models of different heights were constructed. The crown-to-root ratios at the second premolar were 0.86 (Model A), 1.05 (Model B), 1.28 (Model C), 1.56 (Model D), and 1.96 (Model E). The second premolar root was also modeled without crown restoration. A single oblique load of 80 N at a 30-degree angle distal from the vertical axis was directed at the center of the occlusal or root surface of the second premolar. Results:The maximum stresses were observed at the distal cervical regions for all models. These increased as the crown-to-root ratio increased. The highest maximum stress in the cortical bone (35.8 MPa) was observed in Model E with crown restoration. In the regions near the overdenture abutments, the maximum stresses in the bone and the periodontal ligament were 33.9% to 61.7% lower than those observed near the crown restorations. Conclusion:The use of the premolar as an overdenture abutment in cases with loss of tooth structure can effectively sustain the stress in the periodontal tissues, particularly under conditions of reduced bone height.

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“…Toolson and Smith (1978) found that after one year, -about one-third of the abutments had become carious when no special preventive means were used. A survey by Ettinger et al (1984), over a period of five years, indicated an overall caries rate of 13.6% per year and further showed that cast gold copings did not protect the abutment teeth against caries. Dolder (1961) reported a 10% incidence of caries over a two-year observation period in patients with overdentures retained by metal bars between gold copings.…”

Section: Introductionmentioning

confidence: 97%

Microbial Aspects of Preventive Regimes in Patients with Overdentures

1987

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The aim of this study was to test effects of preventive regimes using fluoride and chlorhexidine to prevent caries and periodontal diseases in 34 patients with overdentures. The patients, who were treated with immediate overdentures, were distributed at random into three experimental groups. In these groups, different gels--a placebo, a fluoride, and a chlorhexidine-fluoride gel--were tested by daily application. Supragingival plaque samples from selected surfaces of two abutment teeth were taken at one week, and at one, three, and six months after initial insertion of the overdenture. The placebo and fluoride gel influenced neither total CFU nor S. sanguis and A. viscosus/naeslundii counts. In the placebo group, but not in the fluoride group, S. mutans levels increased significantly, indicating the caries risk involved in overdentures. The use of chlorhexidine-fluoride gel resulted in a long-term suppression of total CFU. Further, S. mutans was found to be selectively suppressed to below detection level. A. viscosus/naeslundii was initially strongly suppressed, but after three months a partial return of the population was noticed. S. sanguis was relatively insensitive to the chlorhexidine-fluoride gel. It is concluded that a daily application of a chlorhexidine-fluoride gel is effective against plaque formation and S. mutans on abutment teeth in overdentures.

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Treatment needs of overdenture patients in a longitudinal study: Five-year results

Cited by 55 publications

References 15 publications

The effect of controlled oral hygiene in overdenture wearers

The effect of controlled oral hygiene in overdenture wearers

Finite Element Stress Analysis of Overdenture Abutment as a Function of Crown-to-root Ratio

Microbial Aspects of Preventive Regimes in Patients with Overdentures

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