Changes in Volume of the Gingival Tissue a Stereophotogrammetric Study

Self Cite

– The influence of cigarette smoking on plaque accumulation ws studied in young adult males who endeavoured to stop smoking. Plaque accumultion was evaluated photogrammetrically during a 5‐d smoking period and, after in interval of at least 30d, during a non‐smoking period of the same length. It was found that the amount of plaque was comparatively larger and plaque accumulation rate consequently increased in smokers throughout the smoking period. The differeces were small, however, and not statistically significant. The result: substantiates the view that cigarette smoking has no antibacterial potency so as to reduce plaque formation on tooth surfaces.

Section: Discussionmentioning

confidence: 99%

Section: Plaque Pkotogramnietrymentioning

confidence: 99%

Short‐term investigation on the influence of cigarette smoking upon plaque accumulation

Bergström

1981

Self Cite

“…All oral hygiene measures were withdrawn during the experimental period. The subjects were examined clinically and the plaque on the mandibular left and right first incisors was disclosed with erythrosin on days 4, 7, and 14, For each ofthe students the teeth and jaws were fixed to a special camera system consisting of a stereomicroscope supplemented with two Zeiss cameras (Carl Zeiss, Oberkochen, Germany) perpendicular to the corresponding mandibular left and right central incisors, according to the previously described technique (23)(24)(25). The images photographed with Kodak Ektachrome (160 Tung- 22 Soder et al…”

Section: Methodsmentioning

confidence: 99%

Computerized planimetric method for clinical plaque measurement

Söder

1993

Soder P-0, Jin LJ, Soder B: Computerized planimetrie method for clinical plaque measurement. Scand J Dent Res 1993; 101: 21-5. © Munksgaard 1993 A computerized planimetric method for plaque area measurement has been developed. Using a computerized image analysis system (CIAS), the plaque area and tooth area on color slides were digitized and the number of pixels automatically counted. The proposed Plaque Percent Index (P' M. Index) expresses plaque area as a percentage of tooth area. The reproducibility of this method was tested and the influence of photographic technique on the P% Index was determined. The association of the Turesky modified Quigley-Hein plaque index (Q-H Index) and the P% Index was assessed. The present method was highly reproducible for the P% Index with an intraexaminer variation of 0,28% and intraexaminer correlation coefficient of 0,99, The results show that highly reproducible P% Index values with an error of less than 3,0% were obtained when the photographs were taken under the following conditions. For the buccal surfaces of anterior teeth, the slides were photographed within a 20-degree range in the horizontal plane and a 30-degree range in the vertical plane; and for the lingual/palatal surfaces of anterior teeth and the buccal or lingual/' palatal surfaces of posterior teeth, the slides were photographed with an image of the whole tooth surfaces in the photographic mirrors. The comparison of the Q-H Index and the P% Index revealed that for each score of the Q-H Index the corresponding values of P% Index were wide with a significant crossover value, although a strongly positive correlation was found between the Q-H Index and the P% Index (r = 0,92, P

“…The photographic documentation of the gingival area to be investigated was performed with the aid of a close-up method consisting of a Zeiss' stereomicroscope connected with a camera system for synchronous exposure of two films. The method has been described in detail elsewhere (17,18). By this method stereopairs of photographs are obtained for subsequent stereoscopic evaluation.…”

Section: Photographic Evaluation Of Vascular Changesmentioning

confidence: 99%

Influence of cigarette smoking on vascular reaction during experimental gingivitis

Bergström

Persson

Preber

1988

Self Cite

102

— The influence of cigarette smoking on the vascular reaction during plaque induced gingivitis was studied in humans for 28 days. Sixteen healthy dental students, 8 smokers and 8 non‐smokers, aged 19–42 yr, volunteered for the experiment. A numerical method was used for the evaluation of the vascular reaction. With the aid of stereophotographs changes in the number of gingival vessels were followed during the experiment. It was found that the number of vessels identified increased over time during the experiment in both smokers and non‐smokers. However, in spite of the fact that the plaque accumulation rate was equal, the vascular reaction was less pronounced in smokers. At the end of the experiment after 28 days the intensity of the vascular reaction in smokers was only 50% of that observed in non‐smokers. The difference was statistically significant at the P‐level of 0.05. One week after termination of the experiment and reinstitution of oral hygiene the number of gingival vessels equaled the pre‐experimental values in both groups. The results indicate that the vascular reaction associated with plaque induced gingivitis is suppressed in smokers.