Microdensitometric Analysis of Human Autogenous Alveolar Bone Implants

Matsue, Ichiro; Collings, Clayton K.; Zimmerman, Eugene R.; Vail, Walter C.

doi:10.1902/jop.1970.41.9.489

Cited by 16 publications

(8 citation statements)

References 12 publications

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“…This represented a minor modification of methods previously used. [37][38][39][40][41][42][43][44][45][46][47][48][49] Surgical photographs, surgical measurement from a fixed point to the base of the osseous defect, and models of osseous defects are not useful unless comparison can be made in the same manner at a later date. This necessitates that a reentry surgical procedure be performed.…”

Section: Discussionmentioning

confidence: 99%

Lyophilized Bone Allografts in Periodontal Intraosseous Defects

Altiere

Reeve²,

Sheridan³

1979

Journal of Periodontology

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Nine patients with 10 pairs of intraosseous periodontal defects were treated. Most of the patients had identical bilateral lesions (referred to as "mirror-image" defects). In each pair, one of the defects was randomly selected and treated as a flap and currettage control whereas the other defect was grafted with freeze-dried cortical powdered allografts of bone. Evaluation was based on radiographs, photographs, and measurements taken during both the initial surgery and at reentry approximately 1 year after transplantation. Control procedures (flap and curettage) demonstrated the same amount of osseous regeneration as that seen with the graft procedure. The amount of osseous regeneration demonstrated with the grafting procedures agreed with previously published studies. Evaluation revealed that (1) an autologous control such as incorporated in the "mirrow-image" design of this study is probably the most valid experimental model available for evaluating the clinical effectiveness of any human periodontal grafting procedures; (2) the effectiveness of freeze-dried cortical powdered bone allografts in human periodontal osseous defects is questionable and needs additional study; and (3) nongrafting procedures may be more effective in generating new attachments or reattachments in human periodontal osseous defects than previously believed.

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Section: Discussionmentioning

confidence: 99%

Lyophilized Bone Allografts in Periodontal Intraosseous Defects

Altiere

Reeve²,

Sheridan³

1979

Journal of Periodontology

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“…These influences can considerably be reduced by the use of wellstandardized techniques (Lang & Hill 1977, Nery et ai. 1985, Webber et al 1982, Ramfjord 1974, and the subjective visual interpretation of radiographical films can be replaced by computer aided photodensitometry (Lichtenau et al 1976, Matsue et al 1970, Suzuki 1983).…”

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confidence: 99%

Longitudinal quantitative radiodensitometric study of treated and untreated lower molar furcation involvements

Payot

Bickel

Cimasoni

1987

J Clinic Periodontology

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38 first or second lower molars from 16 patients showing furcation involvements of degrees 1 and 2 were treated after motivation and hygiene instruction, either by subgingival curettage, or by the modified Widman surgical procedure or by furcation plasty. The plaque index, the gingival index of inflammation and the depth of interproximal and interradicular pockets were recorded before and up to 1 year after the 3 therapeutical procedures. The above clinical indices were also followed for 2 years in 15 lower molars from 7 untreated patients. A quantitative radiographical analysis of the interradicular bone was performed in all patients, by using superposable identical radiographs and a computer-assisted photodensitometric technique. In the 3 groups of treated patients, the clinical scores were, in general, improved by the 3 therapeutic modalities. In the furcation areas, the plaque index was always higher on the lingual side, whereas the depth of "horizontal" pockets was always greater on the buccal side. Except for the lesions treated by furcation plasty, no change could be noticed clinically in the depths of vertical or horizontal penetration of a periodontal probe in the furcation areas. The quantitative radiographic analysis, however, clearly showed a loss in the first 2 mm of superficial bone during the 2 months following the 3 therapeutical procedures: this loss was followed by a statistically significant recovery and, for the group treated by curettage, even by a net gain during the 6 to 12 months following therapy. The radiographical density of the deeper layer of bone did not change in the group treated by curettage only. It showed a loss in the first 2 months following the 2 surgical procedures but a statistically significant recovery in the months thereafter. As for the group of untreated patients, at the examinations performed initially, 6 months, 1 and 2 years later, the number of plaque-free and non-bleeding sites in the furcation areas was lower on the lingual as compared to the buccal side, whereas the frequency distribution of furcation involvements was similar on both aspects. No significant changes were found in the various clinical parameters throughout the 2 years of the study. On the contrary, a significant loss of average density of the superficial layer of interradicular bone was already measured on the superposable radiographs 6 months after the initial examination and was found to increase thereafter. No changes of radiodensity could be measured for the deeper layer of bone.(ABSTRACT TRUNCATED AT 400 WORDS)

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“…Repeated probing to bone (Renvert et al 1981, Selipsky 1979) was excluded to avoid subjecting volunteers to six episodes of trauma. Individual radiographic film-holders were then fabricated, similar to those described by Matsue et al (1970). The device consisted of a stent for the entire mandibular or maxillary arch made of a clear plastic sheet (0.60" thick) (Omnivac Clear Plastic Sheet, Buffalo Dental Manufacturing Co., Inc., Brooklyn, NY 11207, U.S.A.) and a biteblock for long-cone paralleling technique (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Radiographic bite-blocks with alignment devices were used to consistently position the film and radiation tube. Matsue et al (1970) minimized the tilting errors of the bite-block (Reggli, Steiner & Curilavic 1971) by processing a temporary plastic stent attached to a commercial radiographic bite-block (Bite-Block Rinn Corporation, Elgin, IL 60120, U.S.A.). Complementing the above methods is a subtraction radiographic technique.…”

Section: Introductionmentioning

confidence: 99%

Film‐holder device for radiographic assessment of periodontal tissues

Nery

Olson

Henkin

et al. 1985

J of Periodontal Research

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A method, combining the standardization of radiographs with consistent radiopaque marker placement using a controlled force, is presented. Ten adult volunteers with healthy mouths were selected. Customized radiographic film holders were fabricated consisting of a plastic stent of the maxillary or mandibular arches to which a radiographic bite‐block was attached. An orthodontic stainless steel tube was added and placed so that the radiographic marker could be guided repeatedly to the base of the sulcus in the same position. The radiographs were exposed using a self‐adhesive grid on the periapical film. To document repeatability, measurements using the device were obtained at different time intervals: twice‐a‐week for the first, third, and fifth week for a total of six measurements for each volunteer. Results showed that the mean vertical and horizontal dimensions were nearly constant across the study period. The device had been shown to be accurate and enabled placement of a radiographic marker to repeatedly reach the same position in the sulcus with a good degree of precision.

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Microdensitometric Analysis of Human Autogenous Alveolar Bone Implants

Cited by 16 publications

References 12 publications

Lyophilized Bone Allografts in Periodontal Intraosseous Defects

Lyophilized Bone Allografts in Periodontal Intraosseous Defects

Longitudinal quantitative radiodensitometric study of treated and untreated lower molar furcation involvements

Film‐holder device for radiographic assessment of periodontal tissues

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