Effects of bactericidal treatments on bacterial adherence and dental plaque formation

Ørstavik, Dag; Ruangsri, Porjai

doi:10.1111/j.1600-0722.1979.tb00685.x

Cited by 4 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The plaque growth curve obtained in the present study can be explained by the fact that the proliferation of bacteria already present on the teeth accounts for the major part of the microbial mass increase during early plaque formation (Orstavik & Ruangsri 1979, Brecx et al 1983, thus leading to an exponential increase.…”

Section: Discussionsupporting

confidence: 53%

“…The rate of the bacterial recolonisation of tooth surfaces seems important to evaluate the frequency need of plaque removal, ln earlier clinical studies, plaque growth was considered to be linear in time (Theilade et al 1966, Lang et al, 1972, Weitman & Eames 1975, Hillam & Hull 1977, Mierau & Singer 1978, Bergstrom 1981. However, since early plaque growth is mostly due to the proliferation of bacteria already present on teeth (Orstavik & Ruangsri 1979. Brecx et al 1983, an exponential plaque growth rate seems more logical.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Is early plaque growth rate constant with time?

Quirynen

Steenberghe

1989

J Clinic Periodontology

View full text Add to dashboard Cite

Early plaque growth and plaque topography were studied in 15 young adults with a healthy periodontium during a 4-day period of no oral hygiene. After perfect tooth-cleaning, the recolonisation of the buccal surfaces of 48 teeth (front teeth and premolars) was recorded at the start and after 6, 12, 24, 30, 36, 48, 54, 60, 72, 84 and 96 h. At each visit, reproducible colour slides of the buccal tooth surfaces were taken after plaque disclosure. Plaque extension was calculated planimetrically as a % of the total surface area of the tooth. At the end of the experimental period, an average of 27.7% of the surface area was covered by plaque. The early plaque growth followed an exponential curve with a slight tendency for saturation at 96 h. During the night, the plaque growth rate decreased by up to 50%. Clear differences in plaque growth rate were observed between types of teeth, and the plaque growth pattern seemed to be closely correlated to irregularities of the tooth surface. The discontinuity in plaque growth and the influence from the tooth surface roughness have important implications for oral hygiene planning.

show abstract

Section: Discussionsupporting

confidence: 53%

mentioning

confidence: 99%

Is early plaque growth rate constant with time?

Quirynen

Steenberghe

1989

J Clinic Periodontology

View full text Add to dashboard Cite

show abstract

“…1977 with individual micro-organisms attaching initially to the dental pellicle (Lie 1979). Multiplication of these bacteria, rather than continued deposition of new bacteria, is considered to account for the increase in plaque mass over time (Brecx et al 1983, Socransky et al 1977, Orstavik & Ruangsri 1979, Quirynen & van Steenberghe 1989. In the present study, plaque was removed and weighed after a 72-h period of accumulation since plaque growth has been reported to reach a maximum after 48 to 94 h (Furuichi et al 1992, Quirynen & van Steenberghe 1989, Socransky et al 1977.…”

Section: Discussionmentioning

confidence: 90%

Effect of localized experimental gingivitis on early supragingival plaque accumulation

Daly

Highfield

1996

J Clinic Periodontology

View full text Add to dashboard Cite

Previous investigations have reported increased plaque formation in the presence of gingival inflammation as compared with gingival health. In these investigations, experimental gingivitis has been induced by total abolition of oral hygiene such that increased levels of salivary bacteria could contribute to the increased plaque formation. In the present study, experimental gingivitis was localized to 2 selected teeth whilst maintaining normal oral hygiene measures in the rest of the mouth. The aim of this study was to investigate whether the mass of plaque accumulating in a 3-day period is influenced by the inflammatory status of the adjacent gingival margins. Following scaling, prophylaxis and a period of optimal hygiene to establish gingival health, "plaque-guards" were worn during routine oral hygiene performance to prevent any cleaning on the buccal surfaces of teeth 14 and 15 from days 0 to 3. On day 3, accumulated plaque was removed from a 1.5 mm zone on the buccal surfaces of 14 and 15 adjacent to the gingival margins and weighed immediately. Subjects continued to wear their plaque-guards during oral hygiene until day 14 to induce experimental gingivitis around the experimental teeth. At day 14, all plaque was cleaned from the buccal surfaces of the experimental teeth and the mass of plaque accumulating over the next 3 days weighed on day 17. Comparison of plaque weights showed that the wet-weight of 3 day-old plaque was higher in the presence of experimental gingivitis than in the presence of gingival health (p = 0.02). This observation suggests that the inflammatory status of the marginal gingiva has an important effect on early, supragingival plaque accumulation.

show abstract

“…Thus, the shifting toward new technologies for preventing dental caries is very prominent. Previous studies have evaluated the effectiveness of using ultraviolet light (UVL) irradiation on reducing the cariogenicity of some bacteria that cause dental caries [ 12 – 14 ]. This photodynamic technology in preventing dental caries was used first by Downes and Blunt in 1877 [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…In dentistry, UVL irradiation has not been thoroughly investigated, and only a few experiments have been conducted. The first investigation of UVL irradiation effects on the dental plaque was in 1979 by Orstavik and Ruangsri [ 12 ]. In that study, small pieces of bovine enamel were mounted on the patient's mandibular molar by the orthodontic appliance to growth human oral bacteria.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of bactericidal effects of ultraviolet light C irradiation on cariogenic bacteria: An in vitro study

2021

View full text Add to dashboard Cite

Backgrounds Ultraviolet light C (UVL-C) irradiation has demonstrated an antimicrobial action against various pathogens. This study aimed to evaluate the bactericidal effect of UVL-C irradiation against cariogenic oral bacteria (Streptococcus mutans) in single layers and colonies grown on solid surfaces. Methods Two different experiments were performed. In the first experiment, a single layer of Streptococcus mutans bacteria on agar plates was exposed to UVL-C irradiation at energies from 0 to 21 mWs/cm2. The second experiment was conducted to inhibit viability of bacterial colonies on solid surfaces. The samples were derived from saliva from a patient where bacteria were grown on plastic strips and then exposed to UVL-C. The highest energy was 1050 mWs/cm2. Results Exposure to 21 mWs/cm2 was bactericidal in single layers of Streptococcus mutans. The result for bacterial colonies on solid surfaces indicated only a bacteriostatic effect, even at energies of 1050 mWs/cm2. Conclusions Ultraviolet light C exhibits bactericidal effects on single layers of Streptococcus mutans but has a limited effect on bacterial colonies in a biofilm. It is a matter of debate whether these in vitro results would have the same effect in clinical setting.

show abstract

Effects of bactericidal treatments on bacterial adherence and dental plaque formation

Cited by 4 publications

References 7 publications

Is early plaque growth rate constant with time?

Is early plaque growth rate constant with time?

Effect of localized experimental gingivitis on early supragingival plaque accumulation

Evaluation of bactericidal effects of ultraviolet light C irradiation on cariogenic bacteria: An in vitro study

Contact Info

Product

Resources

About