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Number: 14
Implant Surface Decontamination Methods. A Scanning Electron Microscopic Evaluation.
Rapoport T, Weitz, D, Caton J, Wernisch J, Romanos GE
Division of Periodontics, Eastman Institute for Oral health, University of Rochester, Rochester, NY, USA and Technologic University of Vienna
15.02.2012
Abstract:
Background: Several therapies have been proposed to treat periimplant inflammatory conditions by removal of biofilm using various methods from exposed implant surfaces.
Objective: The aim of this study was to compare possible alterations in titanium surfaces after the use of different treatment methods.
Materials and Methods: 40 titanium (machined and SLA) discs were “cleaned” (mimic scaling of an implant surface) using different methods: Conventional Gracey currette, titanium, plastic curettes, SONICflex device (KaVo), Ultrasonic devices (NSK and Cavitron, Dentsply) with special plastic tips, CO₂laser (2W, Pulsed mode), Er:YAG laser (KaVo, at 100 mJ/pulse and 10 pps) and 980nm diode laser (KaVo, 2w power setting, non- contact mode). The disc surfaces were observed using scanning electron microscopy (SEM).
Implant Surface Decontamination Methods. A Scanning Electron Microscopic Evaluation.
Rapoport T, Weitz, D, Caton J, Wernisch J, Romanos GE
Division of Periodontics, Eastman Institute for Oral health, University of Rochester, Rochester, NY, USA and Technologic University of Vienna
15.02.2012
Abstract:
Background: Several therapies have been proposed to treat periimplant inflammatory conditions by removal of biofilm using various methods from exposed implant surfaces.
Objective: The aim of this study was to compare possible alterations in titanium surfaces after the use of different treatment methods.
Materials and Methods: 40 titanium (machined and SLA) discs were “cleaned” (mimic scaling of an implant surface) using different methods: Conventional Gracey currette, titanium, plastic curettes, SONICflex device (KaVo), Ultrasonic devices (NSK and Cavitron, Dentsply) with special plastic tips, CO₂ laser (2W, Pulsed mode), Er:YAG laser (KaVo, at 100 mJ/pulse and 10 pps) and 980nm diode laser (KaVo, 2w power setting, non- contact mode). The disc surfaces were observed using scanning electron microscopy (SEM).
Results: Qualitative SEM observations showed that among all cleaning methods tested, the use of ultrasonics with special plastic tips, the CO2 and 980nm diode laser methods and the use of SONICflex, left a smoother surface on both machined and SLA titanium surfaces.
Conclusions: Various cleaning methods affect titanium surfaces in different ways. The use of various modern sonic technologies may provide smoother implant surfaces than other methods of decontamination.
Effects of different root surface cleaning methods on root morphology. A scanning electron microscopic evaluation.
Weitz D, Rapoport T, Caton J, Wernisch J, Romanos GE
Division of Periodontology, Eastman Institute for Oral Health, Rochester, New York, USA; Technical University of Vienna, Vienna, Austria
14.02.2012
Abstract:
Aim: Various methods are available to accomplish the goals of root scaling. The aim of this study was to examine the effects of different root surface cleaning methods on root morphology using scanning electron microscopy.
Material and Methods: 14 extracted human teeth were separated into seven groups of two teeth. Each group received 30 seconds of root instrumentation via one of the following: conventional curette (HuFriedy); air scaler (SONICflex, KaVo); ultrasonics A and B (A: Cavitron, Dentsply; B: NSK, Brasseler); Er:YAG laser (KaVo, at 100 mJ/pulse and 10 pps); CO2 laser (DEKA, at 0.5 W and 5 Hertz); and 980nm diode laser (KaVo, at 3 W power, pulse mode). Scanning electron microscopy (SEM) was used to observe morphological changes in root surfaces following instrumentation.
Effects of different root surface cleaning methods on root morphology. A scanning electron microscopic evaluation.
Weitz D, Rapoport T, Caton J, Wernisch J, Romanos GE
Division of Periodontology, Eastman Institute for Oral Health, Rochester, New York, USA; Technical University of Vienna, Vienna, Austria
14.02.2012
Abstract:
Aim: Various methods are available to accomplish the goals of root scaling. The aim of this study was to examine the effects of different root surface cleaning methods on root morphology using scanning electron microscopy.
Material and Methods: 14 extracted human teeth were separated into seven groups of two teeth. Each group received 30 seconds of root instrumentation via one of the following: conventional curette (HuFriedy); air scaler (SONICflex, KaVo); ultrasonics A and B (A: Cavitron, Dentsply; B: NSK, Brasseler); Er:YAG laser (KaVo, at 100 mJ/pulse and 10 pps); CO2 laser (DEKA, at 0.5 W and 5 Hertz); and 980nm diode laser (KaVo, at 3 W power, pulse mode). Scanning electron microscopy (SEM) was used to observe morphological changes in root surfaces following instrumentation.
Results: The most extensive root damage was with the CO2 laser that appeared to result in removal of the superficial layer of the root surface. The curette, Cavitron, 980nm diode laser and Er:YAG laser produced grooves of varying widths and depths in the superficial layer. NSK and SONICflex produced similar degrees of superficial layer alteration with less grooves and troughs than other methods of instrumentation.
Conclusions: The various root surface cleaning methods affected root surfaces differently, with NSK and SONICflex producing less grooves and troughs in the surface as compared to other methods.
Antinfekční terapie parodontitis
Jamal M. Stein, Priv.-Doz., Dr. med. dent., M.Sc.*, Pia-Merete Jervøe-Storm, Priv.-Doz., Dr. med. dent.**
*Universitätsklinikum der Rheinisch-Westfälischen Technischen Hochschule Aachen; **Rheinische Friedrich-Wilhelms-Universität Bonn
Quintessenz Parodontologie 12. ročník, listopad 2011, 16.12.2011
V posledních letech se stále více v parodontologii etabloval pojem „antiinfekční terapie“
a to jako synonymum pro nechirurgickou terapii parodontitis. Označení „antiinfekční terapie“
podtrhuje myšlenku, že při léčbě parodontitis, která se zaměřuje na její příčinu, se jedná
o potírání multibakterielní infekce.
© 2011 Quintessenz Verlag
Antinfekční terapie parodontitis
Jamal M. Stein, Priv.-Doz., Dr. med. dent., M.Sc.*, Pia-Merete Jervøe-Storm, Priv.-Doz., Dr. med. dent.**
*Universitätsklinikum der Rheinisch-Westfälischen Technischen Hochschule Aachen; **Rheinische Friedrich-Wilhelms-Universität Bonn
Quintessenz Parodontologie 12. ročník, listopad 2011, 16.12.2011
V posledních letech se stále více v parodontologii etabloval pojem „antiinfekční terapie“
a to jako synonymum pro nechirurgickou terapii parodontitis. Označení „antiinfekční terapie“
podtrhuje myšlenku, že při léčbě parodontitis, která se zaměřuje na její příčinu, se jedná
o potírání multibakterielní infekce. Důležitou úlohu v boji s tvorbou biofilmu mají přitom
prostředky konvenční, dále pak nové prostředky mechanické, avšak i přípravky
medikamentózní. Příspěvek přináší přehled o rozsahu, příp. možnostech nechirurgické (antiinfekční)
terapie ze současného hlediska.
© 2011 Quintessenz Verlag
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Apport des instruments sonique et ultrasonique dans les préparations à visée esthétique
Stéphanie Ortet, Edwige Toca, Hervé Tassery
L'INFORMATION DENTAIRE; No.19; May 2011, 18.05.2011
Quel que soit le type de préparation envisagé, la réalisation d´un congé régulier et lisse reste, pour tout practicien, une étape délicate et pourtant déterminante pour l´adaption précise d´une restauration et pour la pérennité de celle-ci. En effet, la position plus ou moins intrasulculaire d´une limite cervicale et son ajustage influencent directement la santé parodontale et conditionnent le résultat esthétique de nos reconstructions.
© 2011 L´INFORMATION DENTAIRE
Apport des instruments sonique et ultrasonique dans les préparations à visée esthétique
Stéphanie Ortet, Edwige Toca, Hervé Tassery
L'INFORMATION DENTAIRE; No.19; May 2011, 18.05.2011
Quel que soit le type de préparation envisagé, la réalisation d´un congé régulier et lisse reste, pour tout practicien, une étape délicate et pourtant déterminante pour l´adaption précise d´une restauration et pour la pérennité de celle-ci. En effet, la position plus ou moins intrasulculaire d´une limite cervicale et son ajustage influencent directement la santé parodontale et conditionnent le résultat esthétique de nos reconstructions.
© 2011 L´INFORMATION DENTAIRE
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Dr. Frédéric Joachim, Dr. Jacques Charon
Lille
Le Fil Dentaire; No. 58; Dec. 2010, 18.12.2010
L´élimination du tartre reste tojours une étape importante quasi-incontournable de tous les typesde traitements parodontaux quels qu´ils soient. La question est de savoir pourquoi, quand et comment procéder au "détartrage" afin d´atteindre les buts fixés conjointement par le patient et le practicien. Ce court article essaie de répondre à ces questions. Il décrit également unse nouvelle technique d´élimination des spicules de tartre pour que les patients et les practiciens soient satisfaits.
© 2010 Le Fil Dentaire
Dr. Frédéric Joachim, Dr. Jacques Charon
Lille
Le Fil Dentaire; No. 58; Dec. 2010, 18.12.2010
L´élimination du tartre reste tojours une étape importante quasi-incontournable de tous les typesde traitements parodontaux quels qu´ils soient. La question est de savoir pourquoi, quand et comment procéder au "détartrage" afin d´atteindre les buts fixés conjointement par le patient et le practicien. Ce court article essaie de répondre à ces questions. Il décrit également unse nouvelle technique d´élimination des spicules de tartre pour que les patients et les practiciens soient satisfaits.
© 2010 Le Fil Dentaire
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Effects of two different methods of non-surgical periodontal therapy on patient perception of pain and quality of life: a randomized controlled clinical trial
Aslund M, Suvan J, Moles DR, D'Aiuto F, Tonetti MS
Periodontology Unit, Division of Restorative Dentistry, Eastman Dental Institute and Hospital, University College London, 256 Gray's Inn Road, London, U.K.
J Periodontol. 2008 Jun;79(6):1031-40., 01.06.2008
BACKGROUND: The purpose of this study was to investigate the effect of two modes of delivery of non-surgical periodontal therapy on patient experience of pain and oral health-related quality of life (OHQoL).
© PMID: 18533780 [PubMed - indexed for MEDLINE]
Effects of two different methods of non-surgical periodontal therapy on patient perception of pain and quality of life: a randomized controlled clinical trial
Aslund M, Suvan J, Moles DR, D'Aiuto F, Tonetti MS
Periodontology Unit, Division of Restorative Dentistry, Eastman Dental Institute and Hospital, University College London, 256 Gray's Inn Road, London, U.K.
J Periodontol. 2008 Jun;79(6):1031-40., 01.06.2008
BACKGROUND: The purpose of this study was to investigate the effect of two modes of delivery of non-surgical periodontal therapy on patient experience of pain and oral health-related quality of life (OHQoL). METHODS: Fifty-nine patients with mild to moderate periodontitis received non-surgical therapy using a piezo-ceramic device (n = 30) or curets (n = 29). Periodontal examinations were carried out at baseline and 8 weeks following therapy. Subjects completed the short-form McGill pain questionnaire, visual analog scales regarding sensitivity and satisfaction, and the United Kingdom OHQoL questionnaire (OHQoL-UK) at baseline, treatment, and 1, 4, and 8 weeks. RESULTS: Both groups showed improvements in clinical parameters with no significant differences between the groups. Pain scores and OHQoL-UK showed no significant differences between the groups. After treatment, OHQoL-UK scores improved from an initially negative effect on quality of life to a level of no effect. Differences in sensitivity scores between the groups were statistically significant at 1 week (P = 0.011), 4 weeks (P = 0.005), and 8 weeks (P = 0.025), favoring the use of the piezo-ceramic device. CONCLUSIONS: In mild to moderate periodontitis, therapy had a small positive impact on pain and OHQoL-UK scores. These data support the concept that periodontitis may negatively affect a patient's quality of life and that treatment may improve it.
© PMID: 18533780 [PubMed - indexed for MEDLINE]
A quadrant-design trial of four therapeutic modalities in chronic moderate periodontitis
Nonhoff J, Derdilopoulou F, Neumann K, Kielbassa AM
Poliklinik für Zahnerhaltungskunde und Parodontologie, Klinik und Polikliniken für Zahn-, Mund- und Kieferheilkunde, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin
Schweiz Monatsschr Zahnmed., 01.01.2006
This randomized clinical study (blind and controlled) compared the effectiveness of an ER:YAG laser (combined with a calculus detection system using fluorescence induced by diode laser radiation for use in non-surgical periodontal therapy) as well as sonic and ultrasonic scalers and scaling and root planning with hand instruments to each other.
© Axel Springer Verlag; PMID: 16792053 [PubMed - indexed for MEDLINE]
A quadrant-design trial of four therapeutic modalities in chronic moderate periodontitis
Nonhoff J, Derdilopoulou F, Neumann K, Kielbassa AM
Poliklinik für Zahnerhaltungskunde und Parodontologie, Klinik und Polikliniken für Zahn-, Mund- und Kieferheilkunde, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin
Schweiz Monatsschr Zahnmed., 01.01.2006
This randomized clinical study (blind and controlled) compared the effectiveness of an ER:YAG laser (combined with a calculus detection system using fluorescence induced by diode laser radiation for use in non-surgical periodontal therapy) as well as sonic and ultrasonic scalers and scaling and root planning with hand instruments to each other. 72 patients suffering from moderate chronic periodontitis (based on a probing depth of 4 mm or more of at least one tooth in each quadrant) were treated using either an Er:YAG-Laser (KEY 3, KaVo), a piezo-electric ultrasonic system (Piezon Master 400, EMS), a sonic scaler (Sonicflex 2003 L, KaVo), or Gracey Mini-five curettes (Hu Friedy) (control). These four kinds of treatment were randomized and grouped into quadrants. Oral health indicators, probing depths (PD) and clinical attachment levels were examined before commencement of the hygiene phase as well as three months after by a blind, calibrated examination. Within the study period, the mean PD (+/- SE) of the control group fell from 4.40 (0.03) mm to 3.08 (0.03) mm; for the laser group, the reduction was slightly greater, falling from 4.47 (0.04) mm to 3.08 (0.03). In comparison, values for the ultrasonic group were 4.39 (0.04) mm in the pre-study examination and 3.09 (0.04) after treatment; in the sonic group, the values were 4.40 (0.03) mm pre-study and 3.07 (0.03) mm post-study. Within the control group, the mean CAL (+/- SE) decreased from 4.95 (0.07) mm to 3.92 (0.07) mm. Within the laser group, the reduction was more distinct, falling from 5.05 (0.07) mm to 3.88 (0.07) mm. In the ultrasonic group, the median CAL decreased from 5.02 (0.08) mm to 3.88 (0.08) mm and from 4.95 (0.07) mm to 3.84 (0.08) mm within the sonic group. From the date of treatment until the third month thereafter, all of the clinical parameters were shown to be statistically significant (p < 0.0001; GEE). Use of the laser led to a much greater reduction in PD levels (p = 0.0021; GEE) than in the ultrasonic group and demonstrated a higher increase in CAL (p = 0.0010; GEE) relative to the manual methods. Conclusion: All four methods of treatment lead to a clinically comparable outcome.
© Axel Springer Verlag; PMID: 16792053 [PubMed - indexed for MEDLINE]
Heat propagation in dentin during cavity preparation in vitro with oscillating instruments
Zesewitz H, Klaiber B, Hotz P, Hugo B
Universität Bern, Klinik für Zahnerhaltung
Schweiz Monatsschr Zahnmed. , 01.01.2005
The purpose of this work was to study the temperature rise caused by preparation of human dentin using two different types of oscillating instruments. A newly designed tungsten carbide tip (Cariex TC, KaVo) and a diamond-coated tip (Cariex D, KaVo) in combination with an airscaler (Sonicflex 2003L, KaVo) and two different flow rates of two coolants were investigated.
© Axel Springer Verlag; PMID: 16033018 [PubMed - indexed for MEDLINE]
Heat propagation in dentin during cavity preparation in vitro with oscillating instruments
Zesewitz H, Klaiber B, Hotz P, Hugo B
Universität Bern, Klinik für Zahnerhaltung
Schweiz Monatsschr Zahnmed. , 01.01.2005
The purpose of this work was to study the temperature rise caused by preparation of human dentin using two different types of oscillating instruments. A newly designed tungsten carbide tip (Cariex TC, KaVo) and a diamond-coated tip (Cariex D, KaVo) in combination with an airscaler (Sonicflex 2003L, KaVo) and two different flow rates of two coolants were investigated. For both tips significant differences in temperature rise were found between cooling with waterspray or with Plakout Gel (Kerr, HaWe) and using no coolant. A flow of 7.3 ml water/min was found to be sufficient to avoid any critical temperature rise, an excavation of longer duration without coolant cannot be recommended. The use of water-based highly viscous substances over a defined period during the caries excavation process seems to be a viable alternative.
© Axel Springer Verlag; PMID: 16033018 [PubMed - indexed for MEDLINE]
Primary preparation of class II cavities with oscillating systems
Wicht MJ, Haak R, Fritz UB, Noack MJ
Dept of Operative Dentistry and Periodontology, University of Cologne, Germany
Am J Dent., 01.02.2002
To assess the effectiveness and side effects of three sonoabrasive systems and conventional rotary cavity preparation.
© PMID: 12074224 [PubMed - indexed for MEDLINE]
Primary preparation of class II cavities with oscillating systems
Wicht MJ, Haak R, Fritz UB, Noack MJ
Dept of Operative Dentistry and Periodontology, University of Cologne, Germany
Am J Dent., 01.02.2002
PURPOSE: To assess the effectiveness and side effects of three sonoabrasive systems and conventional rotary cavity preparation. MATERIALS AND METHODS: Standardized artificial carious lesions were placed in 48 human premolars at mesial and distal surfaces. Three dentists prepared eight cavities each using (1) diamond burs, (2) Sonicflex 2000 L/N (HS), (3) an experimental air scaler (HS.EXP), and (4) the Piezon Cavity System (PCS). A small hemispherical preparation tip (Sonicsys micro) was utilized with the airscalers in Groups 2 and 3. Loss of substance was determined by weighing. Residual caries and damage to the adjacent tooth were assessed by two calibrated investigators. Each cavity was digitally photographed prior to planimetrical measuring of its circumferential dimension. Quality of the cavities' margins was examined by SEM. RESULTS: Rotary preparation required less time (4 minutes 53 seconds) than oscillating preparation with HS (6 minutes 45 seconds) or PCS (7 minutes 45 seconds), (Scheffé, P< 0.05). Preparation with HS.EXP (5 minutes 52 seconds) was not different from rotary and HS. 64% of all cavities were completely excavated, 28% showed distinct and 8% marked residual caries. However, chi2-tests did not reveal differences in caries removal between the systems. Oscillating preparation with HS as well as the experimental air scaler in combination with the hemisphere resulted in less trauma to adjacent tooth surfaces than rotary preparation and the PCS system, (chi2-tests P< 0.05). HS.EXP caused less loss of substance (Scheffé, P< 0.05). Regarding circumferential extension of the cavities, there were no differences between the groups.
© PMID: 12074224 [PubMed - indexed for MEDLINE]
A comparative in vitro study of a magnetostrictive and a piezoelectric ultrasonic scaling instrument
Busslinger A, Lampe K, Beuchat M, Lehmann B
Clinic for Preventive Dentistry, Periodontology and Cariology, Centre for Dental Medicine, University of Zurich, Zurich, Switzerland
J Clin Periodontol. 2001 Jul;28(7):642-9, 01.07.2001
BACKGROUND: The effects of magnetostrictive ultrasonic instruments and piezoelectric ultrasonic instruments on tooth surfaces seem to differ with regards to root debridement. AIM: The purpose of this study was to compare a magnetostrictive ultrasonic scaling instrument with a piezoelectric ultrasonic scaling instrument and a hand curette regarding time taken, calculus removal, tooth surface roughness (Ra), and SEM examination before and after instrumentation.
© PMID: 11422585 [PubMed - indexed for MEDLINE]
A comparative in vitro study of a magnetostrictive and a piezoelectric ultrasonic scaling instrument
Busslinger A, Lampe K, Beuchat M, Lehmann B
Clinic for Preventive Dentistry, Periodontology and Cariology, Centre for Dental Medicine, University of Zurich, Zurich, Switzerland
J Clin Periodontol. 2001 Jul;28(7):642-9, 01.07.2001
BACKGROUND: The effects of magnetostrictive ultrasonic instruments and piezoelectric ultrasonic instruments on tooth surfaces seem to differ with regards to root debridement. AIM: The purpose of this study was to compare a magnetostrictive ultrasonic scaling instrument with a piezoelectric ultrasonic scaling instrument and a hand curette regarding time taken, calculus removal, tooth surface roughness (Ra), and SEM examination before and after instrumentation. METHODS: 30 extracted human teeth with subgingival calculus were assigned to one of three treatment groups (n=10). The working force was standardised for both ultrasonic instruments at 200 g and for the curette at 500 g. RESULTS: The results revealed that the time needed for instrumentation was 126.1+/-38.2 s for the curette, significantly more than for the piezoelectric ultrasonic instrument (74.1+/-27.6 s; p<0.05) and 104.9+/-25.4 s for the magnetostrictive ultrasonic instrument. Remaining calculus was similar for all three groups. The end Ra values were significantly worse for the piezoelectric instrument (2.02+/-0.41; p<0.05) compared to 1.42+/-0.48 for the curette and 1.36+/-0.41 for the magnetostrictive instrument. The SEM examination revealed the smoothest surfaces but, subjectively, the most tooth substance loss after the curette, followed by the magnetostrictive instrument, with the least substance loss, and then the piezoelectric instrument, with medium substance loss. CONCLUSION: The piezoelectric ultrasonic scaler was more efficient than the magnetostrictive ultrasonic scaler in removing calculus but left the instrumented tooth surface rougher.
© PMID: 11422585 [PubMed - indexed for MEDLINE]
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