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Meixner I, Hagl B, Kröner CI, Spielberger BD, Paschos E, Dückers G, Niehues T, Hesse R, Renner ED. Retained primary teeth in STAT3 hyper-IgE syndrome: early intervention in childhood is essential. Orphanet J Rare Dis 2020; 15:244. [PMID: 32912316 PMCID: PMC7488068 DOI: 10.1186/s13023-020-01516-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 08/19/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND STAT3 hyper-IgE syndrome (STAT3-HIES) is a rare primary immunodeficiency that clinically overlaps with atopic dermatitis. In addition to eczema, elevated serum-IgE, and recurrent infections, STAT3-HIES patients suffer from characteristic facies, midline defects, and retained primary teeth. To optimize dental management we assessed the development of dentition and the long-term outcomes of dental treatment in 13 molecularly defined STAT3-HIES patients using questionnaires, radiographs, and dental investigations. RESULTS Primary tooth eruption was unremarkable in all STAT3-HIES patients evaluated. Primary tooth exfoliation and permanent tooth eruption was delayed in 83% of patients due to unresorbed tooth roots. A complex orthodontic treatment was needed for one patient receiving delayed extraction of primary molars and canines. Permanent teeth erupted spontaneously in all patients receiving primary teeth extraction of retained primary teeth during average physiologic exfoliation time. CONCLUSIONS The association of STAT3-HIES with retained primary teeth is important knowledge for dentists and physicians as timely extraction of retained primary teeth prevents dental complications. To enable spontaneous eruption of permanent teeth in children with STAT3-HIES, we recommend extracting retained primary incisors when the patient is not older than 9 years of age and retained primary canines and molars when the patient is not older than 13 years of age, after having confirmed the presence of the permanent successor teeth by radiograph.
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Affiliation(s)
- Iris Meixner
- University Children's Hospital, Dr. von Haunersches Kinderspital, Ludwig Maximilian University, Munich, Germany
- Oral and maxillofacial surgery, Ludwig Maximilian University, Munich, Germany
| | - Beate Hagl
- University Children's Hospital, Dr. von Haunersches Kinderspital, Ludwig Maximilian University, Munich, Germany
- Chair and Institute of Environmental Medicine, UNIKA-T, Technical University of Munich and HelmholtzZentrum München, Munich/Augsburg, Germany
| | - Carolin I Kröner
- University Children's Hospital, Dr. von Haunersches Kinderspital, Ludwig Maximilian University, Munich, Germany
| | - Benedikt D Spielberger
- University Children's Hospital, Dr. von Haunersches Kinderspital, Ludwig Maximilian University, Munich, Germany
| | - Ekaterini Paschos
- Department of orthodontics, Ludwig Maximilian University, Munich, Germany
| | | | - Tim Niehues
- HELIOS Children's Hospital, Krefeld, Germany
| | - Ronny Hesse
- Oral and maxillofacial surgery, Ludwig Maximilian University, Munich, Germany
| | - Ellen D Renner
- Chair and Institute of Environmental Medicine, UNIKA-T, Technical University of Munich and HelmholtzZentrum München, Munich/Augsburg, Germany.
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Folwaczny M, Karnesi E, Berger T, Paschos E. Clinical association between chronic periodontitis and the leukocyte extravasation inhibitors developmental endothelial locus-1 and pentraxin-3. Eur J Oral Sci 2017. [PMID: 28643381 DOI: 10.1111/eos.12357] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This clinical study aimed to determine whether periodontal disease is associated with expression of developmental endothelial locus-1 (Del-1) and pentraxin-3 (PTX-3), endogenous inhibitors of leukocyte extravasation in humans. Expression of DEL1, PTX3, interleukin-17A (IL17A), and lymphocyte function-associated antigen-1 (LFA1) was determined, using RT-PCR and melting curve analysis, in biopsies of gingival tissues from 95 patients: 42 with moderate periodontitis; 40 with severe periodontitis; and 13 healthy controls. Relative expression of DEL1 and PTX3 was statistically significantly weaker in patients with periodontitis than in the control subjects. On the contrary, both IL17A and LFA1 showed statistically significant stronger expression in patients with periodontitis than in healthy controls. Correlation analysis, performed using Spearman's test, showed that expression of DEL1 was statistically significantly linked to periodontitis (ρ = -0.103) and to age (ρ = -0.134), but not to the gender of the patient, and that expression of PTX3 was significantly correlated with periodontitis (ρ = -0.354). Expression of neutrophil extravasation inhibitors DEL1 and PTX3 show significant, but weak, association with the clinical manifestation of chronic periodontitis.
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Affiliation(s)
- Matthias Folwaczny
- Department of Operative Dentistry and Periodontology, Ludwig-Maximilians-University, Munich, Germany
| | - Evangelia Karnesi
- Department of Operative Dentistry and Periodontology, Ludwig-Maximilians-University, Munich, Germany
| | - Tamara Berger
- Department of Operative Dentistry and Periodontology, Ludwig-Maximilians-University, Munich, Germany
| | - Ekaterini Paschos
- Department of Orthodontics, Ludwig-Maximilians-University, Munich, Germany
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Huth KC, Baumann M, Kollmuss M, Hickel R, Fischer MR, Paschos E. Assessment of practical tasks in the Phantom course of Conservative Dentistry by pre-defined criteria: a comparison between self-assessment by students and assessment by instructors. Eur J Dent Educ 2017; 21:37-45. [PMID: 26642844 DOI: 10.1111/eje.12176] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/22/2015] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Assessment of practical skills in undergraduate dental education has difficulties, including a lack of transparency/objectivity in student evaluations. This prospective study investigated whether agreement between student- and faculty-based assessments increased when students were trained to use the assessment criteria. MATERIALS AND METHODS Assessment criteria were available for 6 tasks in the Phantom course of Conservative Dentistry: Class II cavity preparation, composite restoration, gold and ceramic partial crown preparation, trepanation and access cavity preparation, and root canal filling. Forty-two students were allocated to three different assessment training groups. Students' self-assessments of practical tests were compared with instructors' assessments, depending on training intensity and task type (Pearson's rho, ANOVA, Tukey's post hoc test, Kruskal-Wallis test). Students/instructors were questioned regarding benefits/drawbacks of the criteria. RESULTS Student self-assessments showed either consent (24.2%), overestimation (31%) or underestimation (44.8%). Gender differences were negligible. Regarding passing/failing grades, more intensive training yielded significantly increased agreement only for preparation of gold partial crowns (rho = +0.313, P = 0.044). Ratings exhibited significant differences amongst tasks (P = 0.002), for example, trepanation assessment had significantly lower differences than gold or ceramic preparation assessments. These discrepancies decreased with increased training. Students consistently reported benefitting most from learning the criteria for gold preparations, followed by composite and ceramic preparations. They also reported that learning the criteria was beneficial for knowledge transfer/feedback. Instructors rated the criteria as helpful for task evaluation and feedback efficiency. CONCLUSIONS Pre-defined assessment criteria may increase consistency between student self-assessment and instructor assessment depending on the task, improving transparency and feedback in dental education.
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Affiliation(s)
- K C Huth
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - M Baumann
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - M Kollmuss
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - R Hickel
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - M R Fischer
- Institute of Teaching and Educational Research in Medicine, Ludwig-Maximilians-University, Munich, Germany
| | - E Paschos
- Department of Orthodontics, Ludwig-Maximilians-University, Munich, Germany
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Huth KC, Baumann M, Kollmuss M, Hickel R, Fischer MR, Paschos E. Assessment of practical tasks in the Phantom course of Conservative Dentistry by pre-defined criteria: a comparison between self-assessment by students and assessment by instructors. Eur J Dent Educ 2017. [PMID: 26642844 DOI: 10.1111/eje.12176[epubaheadofprint]10.1111/eje.12176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
INTRODUCTION Assessment of practical skills in undergraduate dental education has difficulties, including a lack of transparency/objectivity in student evaluations. This prospective study investigated whether agreement between student- and faculty-based assessments increased when students were trained to use the assessment criteria. MATERIALS AND METHODS Assessment criteria were available for 6 tasks in the Phantom course of Conservative Dentistry: Class II cavity preparation, composite restoration, gold and ceramic partial crown preparation, trepanation and access cavity preparation, and root canal filling. Forty-two students were allocated to three different assessment training groups. Students' self-assessments of practical tests were compared with instructors' assessments, depending on training intensity and task type (Pearson's rho, ANOVA, Tukey's post hoc test, Kruskal-Wallis test). Students/instructors were questioned regarding benefits/drawbacks of the criteria. RESULTS Student self-assessments showed either consent (24.2%), overestimation (31%) or underestimation (44.8%). Gender differences were negligible. Regarding passing/failing grades, more intensive training yielded significantly increased agreement only for preparation of gold partial crowns (rho = +0.313, P = 0.044). Ratings exhibited significant differences amongst tasks (P = 0.002), for example, trepanation assessment had significantly lower differences than gold or ceramic preparation assessments. These discrepancies decreased with increased training. Students consistently reported benefitting most from learning the criteria for gold preparations, followed by composite and ceramic preparations. They also reported that learning the criteria was beneficial for knowledge transfer/feedback. Instructors rated the criteria as helpful for task evaluation and feedback efficiency. CONCLUSIONS Pre-defined assessment criteria may increase consistency between student self-assessment and instructor assessment depending on the task, improving transparency and feedback in dental education.
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Affiliation(s)
- K C Huth
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - M Baumann
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - M Kollmuss
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - R Hickel
- Department of Restorative Dentistry, Periodontology & Paedodontics, Ludwig-Maximilians-University, Munich, Germany
| | - M R Fischer
- Institute of Teaching and Educational Research in Medicine, Ludwig-Maximilians-University, Munich, Germany
| | - E Paschos
- Department of Orthodontics, Ludwig-Maximilians-University, Munich, Germany
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Huth KC, Paschos E, Hajek-Al-Khatar N, Hollweck R, Crispin A, Hickel R, Folwaczny M. Effectiveness of 4 Pulpotomy Techniques—Randomized Controlled Trial. J Dent Res 2016; 84:1144-8. [PMID: 16304444 DOI: 10.1177/154405910508401210] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pulpotomy is the accepted therapy for the management of cariously exposed pulps in symptom-free primary molars; however, evidence is lacking about the most appropriate technique. The aim of this study was to compare the relative effectiveness of the Er:YAG laser, calcium hydroxide, and ferric sulfate techniques with that of dilute formocresol in retaining such molars symptom-free. Two hundred primary molars in 107 healthy children were included and randomly allocated to one of the techniques. The treated teeth were blindly re-evaluated after 6, 12, 18, and 24 months. Descriptive data analysis and logistic regression analysis, accounting for each patient’s effect by a generalized estimating equation (GEE), were used. After 24 months, the following total and clinical success rates were determined (%): formocresol 85 (96), laser 78 (93), calcium hydroxide 53 (87), and ferric sulfate 86 (100). Only calcium hydroxide performed significantly worse than formocresol (p = 0.001, odds ratio = 5.6, 95% confidence interval 2.0–15.5). In conclusion, calcium hydroxide is less appropriate for pulpotomies than is formocresol.
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Affiliation(s)
- K C Huth
- Department of Restorative Dentistry & Periodontology, Dental School, Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany
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Euba A, Paschos E, Mattner B, Storr U. Motivation zur Prävention im Kindesalter als Basis für eine nachhaltige Zahngesundheit – Das Augsburger Modell. Gesundheitswesen 2016; 78:103-6. [DOI: 10.1055/s-0041-110989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- A. Euba
- Verein zur Förderung der wissenschaftlichen Zahnheilkunde in Bayern e. V
| | - E. Paschos
- Zahnklinik der Ludwig-Maximilians-Universität München
| | - B. Mattner
- Bayerische Landesarbeitsgemeinschaft Zahngesundheit e. V
| | - U. Storr
- Gesundheitsamt der Stadt Augsburg
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Paschos E, Geiger FJ, Malyk Y, Rudzki I, Wichelhaus A, Ilie N. Efficacy of four preventive measures against enamel demineralization at the bracket periphery—comparison of microhardness and confocal laser microscopy analysis. Clin Oral Investig 2015; 20:1355-66. [DOI: 10.1007/s00784-015-1624-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 09/29/2015] [Indexed: 10/23/2022]
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8
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Affiliation(s)
- E Paschos
- Poliklinik für Kieferorthopädie, Ludwig-Maximilians-Universität München, Goethestr. 70, 80336, München, Deutschland,
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Paschos E, Bücher K, Huth KC, Crispin A, Wichelhaus A, Dietl T. Erratum to: Is there a need for orthodontic plaque indices?—diagnostic accuracy of four plaque indices. Clin Oral Investig 2014. [DOI: 10.1007/s00784-013-1101-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Paschos E. A randomized clinical trial on the use of medical Portland cement, MTA, and calcium hydroxide indirect pulp treatment. J Orofac Orthop 2014. [PMID: 24595900 DOI: 10.1007/s00056-014-0208-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- E Paschos
- Poliklinik für Kieferorthopädie, Ludwig-Maximilians-Universität München, Goethestr. 70, 80336, München, Germany,
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11
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Paschos E. Dental findings and identification of undiagnosed hyperglycemia. J Orofac Orthop 2014. [PMID: 24577018 DOI: 10.1007/s00056-014-0207-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- E Paschos
- Poliklinik für Kieferorthopädie, Ludwig-Maximilians-Universität München, Goethestr. 70, 80336, München, Germany,
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Huth KC, Nazet M, Paschos E, Linsenmann R, Hickel R, Nolte D. Autotransplantation and surgical uprighting of impacted or retained teeth: A retrospective clinical study and evaluation of patient satisfaction. Acta Odontol Scand 2013; 71:1538-46. [PMID: 23638808 DOI: 10.3109/00016357.2013.775667] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES This retrospective clinical study aimed to determine the success rate of autotransplanted impacted or retained teeth along with a patient satisfaction survey and to analyze the influence of relevant clinical and radiographic parameters. SUBJECTS AND METHODS Fifty-seven teeth (37 canines, 10 molars, seven premolars, three incisors) in 45 patients (median 15 years) were evaluated over a mean of 1.6 years. The success criteria were pocket probing depth ≤3.5 mm, mobility grade ≤ II, Periotest ≤30 and complete alveolar bone healing. The influencing parameters were oral hygiene, smoking, periodontal screening index, occlusal/proximal contacts, horizontal position, dental age, pulp obliteration and degree of displacement. Furthermore, bone height was measured. RESULTS The overall success rate was 74%, along with a high patient satisfaction. The survival rate was 96% after a mean follow-up of 1.6 years. The favorable factors were proper oral hygiene, non-smoking, good general periodontal condition, proximal contacts and pulp obliteration. An increase in or maintenance of bone level was found in 96%. CONCLUSIONS Autotransplantation of impacted or retained teeth is an appropriate treatment, if orthodontic alignment has failed, especially in growing patients.
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Paschos E. Intrauterine hormone effects on tooth dimensions. J Orofac Orthop 2013. [DOI: 10.1007/s00056-013-0169-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Paschos E. A 7-year randomized prospective study of a one-step self-etching adhesive in non-carious cervical lesions. The effect of curing modes and restorative material. J Orofac Orthop 2013. [PMID: 23974445 DOI: 10.1007/s00056-013-0170-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Affiliation(s)
- E Paschos
- Poliklinik für Kieferorthopädie, Ludwig-Maximilians-Universität München, Goethestr. 70, 80336, München, Germany,
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Paschos E. Longevity of repaired restorations: a practice-based study. J Orofac Orthop 2013. [DOI: 10.1007/s00056-012-0131-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lamper T, Ilie N, Huth KC, Rudzki I, Wichelhaus A, Paschos E. Self-etch adhesives for the bonding of orthodontic brackets: faster, stronger, safer? Clin Oral Investig 2013; 18:313-9. [DOI: 10.1007/s00784-013-0942-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 02/01/2013] [Indexed: 10/27/2022]
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Paschos E. What’s new the dental scene? J Orofac Orthop 2012. [DOI: 10.1007/s00056-012-0101-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Glas J, Seiderer J, Tillack C, Paschos E, Wetzke M, Diegelmann J, Czamara D, Brand S. Functional SFTPD gene variants are not associated with susceptibility to inflammatory bowel disease in the German population. Inflamm Bowel Dis 2011; 17:1439-40. [PMID: 21560203 DOI: 10.1002/ibd.21500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Huth KC, Quirling M, Lenzke S, Paschos E, Kamereck K, Brand K, Hickel R, Ilie N. Effectiveness of ozone against periodontal pathogenic microorganisms. Eur J Oral Sci 2011; 119:204-10. [DOI: 10.1111/j.1600-0722.2011.00825.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Glas J, Seiderer J, Markus C, Pfennig S, Wetzke M, Paschos E, Göke B, Ochsenkühn T, Müller-Myhsok B, Diegelmann J, Roeske D, Brand S. Role of PPARG gene variants in inflammatory bowel disease. Inflamm Bowel Dis 2011; 17:1057-8. [PMID: 20722066 DOI: 10.1002/ibd.21425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 06/10/2010] [Accepted: 06/14/2010] [Indexed: 12/09/2022]
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Lamper T, Steinhäuser-Andresen S, Huth KC, Ilie N, Paschos E. Does a reduction of polymerization time and bonding steps affect the bond strength of brackets? Clin Oral Investig 2011; 16:665-71. [PMID: 21448637 DOI: 10.1007/s00784-011-0540-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Accepted: 03/04/2011] [Indexed: 11/26/2022]
Abstract
High bond strengths are required in order to avoid bracket failure during treatment while brackets should be removable. In addition, chair time should be kept at a minimum. Therefore, the aim of this study was to investigate any differences in bracket's bond strength to enamel by reducing the polymerization time and the steps of bonding procedure. Five hundred teeth were randomly allocated into 20 groups. The groups were established considering the investigated curing units (quartz-tungsten-halogen (QTH) and light-emitting diode (LED), each with two different polymerization times) and the used bonding agents (Clearfil SE Bond, Transbond Plus, Ideal1, iBond, and Transbond XT Primer following acid etching). The brackets were debonded using a shear-peel load and used to calculate the bond strength. The location of adhesive failure was registered by using the modified adhesive remnant index (ARI). The influence of the parameters curing unit, curing time, and bonding agent as well as their interaction products on bond strength showed that the bonding agent influenced the bond strength most followed by curing time. The parameter curing unit as well as all the generated interaction products of it showed a lower impact. Regarding the ARI, the bonding agent exhibited also the highest influence. Using a LED resulted in comparable bond strengths as the QTH curing device also at shorter exposure times. Additionally, the two-component self-etching primers showed similar bond strengths compared to the acid-etching method. Chair time can be reduced by using two-component self-etching primers and LED without decrease of bond strength.
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Affiliation(s)
- Timea Lamper
- Department of Prosthodontics, LMU-University Munich, Munich, Germany
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Paschos E, Kleinschrodt T, Clementino-Luedemann T, Huth KC, Hickel R, Kunzelmann KH, Rudzki-Janson I. Effect of different bonding agents on prevention of enamel demineralization around orthodontic brackets. Am J Orthod Dentofacial Orthop 2009; 135:603-12. [PMID: 19409343 DOI: 10.1016/j.ajodo.2007.11.028] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2007] [Revised: 11/30/2007] [Accepted: 11/30/2007] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Demineralization around the bracket is an undesired side effect of orthodontic treatment. The aim of this in-vitro study was to evaluate the efficacy of 5 bonding agents to prevent enamel demineralization. Two quantification methods were used. METHODS Eighty-five extracted teeth were randomly allocated to 5 groups: (1) Transbond Plus SEP and Transbond XT (both, 3M Unitek, Seefeld, Germany), (2) 37% phosphoric acid, Pro Seal (Reliance Orthodontic Products, Itasca, Ill) and Transbond XT, (3) Clearfil Protect Bond (Kuraray Medical, Okayama, Japan) and Transbond XT, (4) 37% phosphoric acid and Light Bond (Reliance Orthodontic Products), and (5) Ortho Conditioner and Fuji Ortho LC (both, GC, Tokyo, Japan). In-vitro caries was created by pH cycling for 30 days. After demineralization, the teeth were scanned with a commercial cone-beam microtomographic system. Then the teeth were examined by polarized light microscopy. RESULTS The 2 methods of examination showed significant differences among the 5 groups according to lesion depth and mineral loss (P < 0.01). The resin-modified glass ionomer cement (group 5) had the lowest values for lesion depth and mineral loss. CONCLUSIONS Fuji Ortho LC showed a significantly smaller lesion depth and less mineral loss compared with the other materials. The cone-beam microtomographic system is suitable for evaluation of subsurface lesions and has considerable advantages.
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Affiliation(s)
- Ekaterini Paschos
- Department of Orthodontics, Ludwig-Maximilians University, Munich, Germany.
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Paschos E, Kurochkina N, Huth KC, Hansson CS, Rudzki-Janson I. Failure rate of brackets bonded with antimicrobial and fluoride-releasing, self-etching primer and the effect on prevention of enamel demineralization. Am J Orthod Dentofacial Orthop 2009; 135:613-20. [DOI: 10.1016/j.ajodo.2008.01.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 01/18/2008] [Accepted: 01/28/2008] [Indexed: 10/20/2022]
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Huth KC, Quirling M, Maier S, Kamereck K, Alkhayer M, Paschos E, Welsch U, Miethke T, Brand K, Hickel R. Effectiveness of ozone against endodontopathogenic microorganisms in a root canal biofilm model. Int Endod J 2009; 42:3-13. [PMID: 19125975 DOI: 10.1111/j.1365-2591.2008.01460.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To assess the antimicrobial efficacy of aqueous (1.25-20 microg mL(-1)) and gaseous ozone (1-53 g m(-3)) as an alternative antiseptic against endodontic pathogens in suspension and a biofilm model. METHODOLOGY Enterococcus faecalis, Candida albicans, Peptostreptococcus micros and Pseudomonas aeruginosa were grown in planctonic culture or in mono-species biofilms in root canals for 3 weeks. Cultures were exposed to ozone, sodium hypochlorite (NaOCl; 5.25%, 2.25%), chlorhexidine digluconate (CHX; 2%), hydrogen peroxide (H(2)O(2); 3%) and phosphate buffered saline (control) for 1 min and the remaining colony forming units counted. Ozone gas was applied to the biofilms in two experimental settings, resembling canal areas either difficult (setting 1) or easy (setting 2) to reach. Time-course experiments up to 10 min were included. To compare the tested samples, data were analysed by one-way anova. RESULTS Concentrations of gaseous ozone down to 1 g m(-3) almost and aqueous ozone down to 5 microg mL(-1) completely eliminated the suspended microorganisms as did NaOCl and CHX. Hydrogen peroxide and lower aqueous ozone concentrations were less effective. Aqueous and gaseous ozone were dose- and strain-dependently effective against the biofilm microorganisms. Total elimination was achieved by high-concentrated ozone gas (setting 2) and by NaOCl after 1 min or a lower gas concentration (4 g m(-3)) after at least 2.5 min. High-concentrated aqueous ozone (20 microg mL(-1)) and CHX almost completely eliminated the biofilm cells, whilst H(2)O(2) was less effective. CONCLUSION High-concentrated gaseous and aqueous ozone was dose-, strain- and time-dependently effective against the tested microorganisms in suspension and the biofilm test model.
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Affiliation(s)
- K C Huth
- Department of Restorative Dentistry & Periodontology, Ludwig-Maximilians University, Munich, Germany.
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Paschos E, Westphal JO, Ilie N, Huth KC, Hickel R, Rudzki-Janson I. Artificial saliva contamination effects on bond strength of self-etching primers. Angle Orthod 2008; 78:716-21. [PMID: 18302473 DOI: 10.2319/0003-3219(2008)078[0716:asceob]2.0.co;2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2007] [Accepted: 08/01/2007] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To test the hypothesis that there is no difference in the bond strength with or without contamination with artificial saliva when using two different self-etching primers (Transbond Plus and iBond) in comparison with a conventional acid-etching method (37% phosphoric acid and Transbond XT) for bonding of orthodontic brackets. MATERIALS AND METHODS One hundred fifty extracted human premolars were randomly allocated to six different groups, with 25 teeth in each group. Orthodontic metal brackets (APC II, Victory Twin 22 UNIV) were used. For contamination, a saliva replacement (Ptyalin) was applied. After contamination the surface was air-dried for 5 seconds and the bonding procedure continued. The bonded teeth were stored in deionized water at 37 degrees C for 30 days and then thermocycled for 24 hours before debonding with a universal testing machine. The load was recorded at bond failure. The location of adhesive failure was determined under magnification using the adhesive remnant index (ARI). RESULTS Clinically acceptable bond strengths were found for all primers used in this study. The contamination by saliva significantly decreased the bond strength when using the conventional acid-etching method (t = 0.0001). Self-etching primers were less influenced by saliva contamination. There was no significant difference in the ARI score among the groups (P > .05). CONCLUSIONS Saliva contamination significantly decreased the bond strength when the conventional acid-etching method was used. The self-etching primers were influenced the least. The bond strengths achieved for the self-etching primers and the conventional etching method after saliva contamination were not significantly different.
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Affiliation(s)
- Ekaterini Paschos
- Department of Orthodontics, Dental School, Ludwig-Maximilians-University, Munich, Germany.
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Huth KC, Neuhaus KW, Gygax M, Bücher K, Crispin A, Paschos E, Hickel R, Lussi A. Clinical performance of a new laser fluorescence device for detection of occlusal caries lesions in permanent molars. J Dent 2008; 36:1033-40. [PMID: 18930575 DOI: 10.1016/j.jdent.2008.08.013] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2008] [Revised: 08/20/2008] [Accepted: 08/26/2008] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES To determine the clinical performance of a laser fluorescence device (DIAGNOdent pen, KaVo) to discriminate between different occlusal caries depths (D(0)-D(1-4); D(0-2)-D(3,4)) in permanent molars. METHODS In this prospective, randomized two-centre-study 120 sound/uncavitated carious sites in 120 patients were measured after visual and radiographic caries assessment. In cases of operative intervention (n=86), the lesion depths after caries removal were recorded (reference). In cases of preventive intervention (n=34), the sites were reassessed visually/radiographically after 12 months to verify the status assessed before (reference). The discrimination performance was determined statistically (Mann-Whitney test, Spearman's rho coefficient, and areas under the receiver operating characteristic curves (AUCs)). Sensitivities (SE) and specificities (SP) were plotted as a function of the measured values and cut-off values for the mentioned thresholds suggested. RESULTS Sound sites (n=13) had significantly minor fluorescence values than carious sites (n=107) (P<0.0001) as had sites with no/enamel caries (n=63) compared to dentinal caries (n=57). The AUCs for the same discriminations were 0.92 and 0.78 (P<0.001). For the D(0)-D(1-4) threshold, a cut-off at a value of 12 (SE: 0.88, SP: 0.85) and for the D(0-2)-D(3,4) threshold at 25 (SE: 0.67, SP: 0.79) can be suggested. A moderate positive correlation between the measurements and the caries depths was calculated (rho=+0.57, P=0.01). CONCLUSION Within this study, the device's discrimination performance for different caries depths was moderate to very good and it may be recommended as adjunct tool in the diagnosis of occlusal caries.
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Affiliation(s)
- K C Huth
- Department of Restorative Dentistry, Periodontology and Paediatric Dentistry, Ludwig-Maximilians-University, Munich, Germany.
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Paschos E, Limbach M, Teichmann M, Huth KC, Folwaczny M, Hickel R, Rudzki-Janson I. Orthodontic Attachments and Chlorhexidine-Containing Varnish Effects on Gingival Health. Angle Orthod 2008; 78:908-16. [DOI: 10.2319/090707-422.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2007] [Accepted: 10/01/2007] [Indexed: 11/23/2022] Open
Abstract
Abstract
Objective: To compare the severity of clinical inflammation parameters and the level of the inflammatory mediator interleukin (IL)–1β during orthodontic treatment by using brackets and bands. In addition, the effect of a chlorhexidine-containing varnish was investigated.
Materials and Methods: This prospective randomized controlled trial included 40 healthy children who required an orthodontic treatment of mild crowding. Either brackets or bands were randomly allocated to the premolars with a split-mouth design. Twenty of the children received a chlorhexidine-containing varnish during the treatment (0, 12, 24 weeks), while the remaining children served as a control group. Prior and until 24 weeks after the insertion, data were recorded regarding the pocket depth (PD), the gingival appearance (gingival index [GI]), and the plaque accumulation (plaque index [PI]). Gingival crevicular fluid was collected as well. A quantitative enzyme-linked immunoassay technique was used to detect differences in IL-1β.
Results: The PDs and the gingival index of teeth with brackets showed significantly lower values in comparison with teeth treated with bands (P = .0001). The IL-1β levels confirmed these findings. In contrast, the PI showed higher values for the teeth with brackets (P = .0001). The teeth that received a chlorhexidine-containing varnish showed significantly lower values in the follow-ups for most of the evaluated parameters (PDBand, PIBand, PIBracket, GIBand, GIBracket; P < .015).
Conclusion: The clinically observed parameters as well as the IL-1β levels reflected the higher impact of bands on gingival health. These values showed a significant decrease after application of a chlorhexidine-containing varnish. However, the PI showed higher values for the teeth with brackets.
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Affiliation(s)
- Ekaterini Paschos
- a Assistant Professor, Department of Orthodontics, Dental School, Ludwig-Maximilians-University, Munich, Germany
| | | | - Marion Teichmann
- c Dental student, Dental School, Ludwig-Maximilians-University, Munich, Germany
| | - Karin C. Huth
- d Assistant Professor, Department of Restorative Dentistry, Periodontology and Pediatric Dentistry, Dental School, Ludwig-Maximilians-University, Munich, Germany
| | - Matthias Folwaczny
- e Associate Professor, Priv. Doz, Department of Restorative Dentistry, Periodontology and Pediatric Dentistry, Dental School, Ludwig-Maximilians-University, Munich, Germany
| | - Reinhard Hickel
- f Professor and Head, Department of Restorative Dentistry, Periodontology and Pediatric Dentistry, Dental School, Ludwig-Maximilians-University, Munich, Germany
| | - Ingrid Rudzki-Janson
- g Professor and Head, Department of Orthodontics, Dental School, Ludwig-Maximilians-University, Munich, Germany
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Schmechel S, Konrad A, Diegelmann J, Glas J, Wetzke M, Paschos E, Lohse P, Göke B, Brand S. Linking genetic susceptibility to Crohn's disease with Th17 cell function: IL-22 serum levels are increased in Crohn's disease and correlate with disease activity and IL23R genotype status. Inflamm Bowel Dis 2008; 14:204-12. [PMID: 18022867 DOI: 10.1002/ibd.20315] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND We analyzed the influence of Crohn's disease (CD)-associated IL23R gene variants on IL-22 that is expressed in IL-23R+ Th17 cells. METHODS IL-22 serum levels were measured in 242 CD patients and in 31 healthy controls. Subanalyses included serum levels of IL-6, TNF-alpha, IL-17A, IL-17F, C-reactive protein (CRP), and leukocyte count. In all patients, genotyping for 10 CD-associated IL23R single nucleotide polymorphisms (SNPs) and the 3 main CD-associated CARD15 variants was performed. RESULTS There was a highly significant increase in IL-22 serum expression in CD patients compared to healthy controls (P = 2.53 x 10(-9)). IL-22 serum levels correlated with disease activity: IL-22 levels in patients with a Crohn's disease activity index (CDAI) >150 were significantly higher than in patients with a CDAI <150 (P = 0.001), while TNF-alpha and IL-6 were not significantly different between these 2 groups. Analyzing the effect of 10 IL23R variants on IL-22 serum levels, we demonstrated that the quotients of mean IL-22 serum levels of carriers of the minor allele to the mean serum IL-22 in wildtype carriers correlated highly with the corresponding CD susceptibility risk for each gene variant (r = 0.807). The IL-22 levels in carriers of CD risk-increasing IL23R variants were significantly higher than in carriers of CD risk-decreasing IL23R variants (P = 0.008). CONCLUSIONS The Th17 cytokine IL-22 is expressed at high levels in CD and correlates with disease activity, offering a better separation between active and inactive CD than IL-6 and TNF-alpha. IL23R genotypes influence IL-22 serum expression, linking genetic CD susceptibility to Th17 cell function for the first time.
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Affiliation(s)
- Silke Schmechel
- Department of Medicine II, Grosshadern, University of Munich, Germany
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Abstract
Ozone has been proposed as an alternative oral antiseptic in dentistry, due to its antimicrobial power reported for gaseous and aqueous forms, the latter showing a high biocompatibility with mammalian cells. New therapeutic strategies for the treatment of periodontal disease and apical periodontitis should consider not only antibacterial effects, but also their influence on the host immune response. Therefore, our aim was to investigate the effect of aqueous ozone on the NF-kappaB system, a paradigm for inflammation-associated signaling/transcription. We showed that NF-kappaB activity in oral cells stimulated with TNF, and in periodontal ligament tissue from root surfaces of periodontally damaged teeth, was inhibited following incubation with ozonized medium. Under this treatment, IkappaBalpha proteolysis, cytokine expression, and kappaB-dependent transcription were prevented. Specific ozonized amino acids were shown to represent major inhibitory components of ozonized medium. In summary, our study establishes a condition under which aqueous ozone exerts inhibitory effects on the NF-kappaB system, suggesting that it has an anti-inflammatory capacity.
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Affiliation(s)
- K C Huth
- Department of Restorative Dentistry & Periodontology Ludwig-Maximilians-University, Goethe Street 70, 80336 Munich, Germany.
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Huth KC, Jakob FM, Saugel B, Cappello C, Paschos E, Hollweck R, Hickel R, Brand K. Effect of ozone on oral cells compared with established antimicrobials. Eur J Oral Sci 2006; 114:435-40. [PMID: 17026511 DOI: 10.1111/j.1600-0722.2006.00390.x] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ozone has been proposed as an alternative antiseptic agent in dentistry based on reports of its antimicrobial effects in both gaseous and aqueous forms. This study investigated whether gaseous ozone (4 x 10(6) microg m(-3)) and aqueous ozone (1.25-20 microg ml(-1)) exert any cytotoxic effects on human oral epithelial (BHY) cells and gingival fibroblast (HGF-1) cells compared with established antiseptics [chlorhexidine digluconate (CHX) 2%, 0.2%; sodium hypochlorite (NaOCl) 5.25%, 2.25%; hydrogen peroxide (H(2)O(2)) 3%], over a time of 1 min, and compared with the antibiotic, metronidazole, over 24 h. Cell counts, metabolic activity, Sp-1 binding, actin levels, and apoptosis were evaluated. Ozone gas was found to have toxic effects on both cell types. Essentially no cytotoxic signs were observed for aqueous ozone. CHX (2%, 0.2%) was highly toxic to BHY cells, and slightly (2%) and non-toxic (0.2%) to HGF-1 cells. NaOCl and H(2)O(2) resulted in markedly reduced cell viability (BHY, HGF-1), whereas metronidazole displayed mild toxicity only to BHY cells. Taken together, aqueous ozone revealed the highest level of biocompatibility of the tested antiseptics.
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Affiliation(s)
- Karin C Huth
- Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University, Munich, Germany.
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Paschos E, Huth KC, Benz C, Reeka-Bardschmidt A, Hickel R. Efficacy of intraoral topical anesthetics in children. J Dent 2006; 34:398-404. [PMID: 16239059 DOI: 10.1016/j.jdent.2005.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Revised: 09/01/2005] [Accepted: 09/08/2005] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES The literature reports mixed results regarding the efficacy of intraoral topical anesthetics. Only a few studies have been performed in children. Some non-placebo controlled studies have been carried out to compare the efficacy in reducing children's injection pain between different topical anesthetics METHODS In a randomized, double blind, placebo controlled study with split-mouth design 104 children were enrolled to evaluate the efficacy of four topical anesthetics (Gingicain Spray, Gingicaine Topical Anesthetic, Legecain-Solution, EMLA Crème) when used prior to buccal injections within the conservative treatment of carious upper primary molars. The heart rate change and a Face Pain Scale were used as primary variables. The Visual Analog Scale, the modified Children's Hospital Pain Scale and the Sound-Eyes-Motor Scale were also evaluated. RESULTS There was no significant difference between the placebo and any corresponding topical anesthetic with regard to the primary variables (HRC and FPS). A significant difference was found in favour of Gingicain Spray and Gingicaine Topical Anesthetic according to secondary variables (VAS, S(E)MS). CONCLUSION While the secondary variables point to a benefit of the topical anesthetics Gingicain Spray and Gingicaine Topical Anesthetic compared to placebo, the results of the primary variables showed no differences in effectiveness of topical anesthetics and their corresponding placebos.
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Affiliation(s)
- Ekaterini Paschos
- Department of Orthodontics, Dental School, LMU-University Munich, Goethestr. 70, 80336 München, Germany.
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Paschos E, Okuka S, Ilie N, Huth KC, Hickel R, Rudzki-Janson I. Investigation of Shear-Peel Bond Strength of Orthodontic Brackets on Enamel after Using Pro Seal™. J Orofac Orthop 2006; 67:196-206. [PMID: 16736120 DOI: 10.1007/s00056-006-0541-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2005] [Accepted: 03/20/2006] [Indexed: 11/24/2022]
Abstract
AIM The aim of this investigation was to ascertain whether the use of a fluoride-releasing, light-curing sealant (Pro Seal, Reliance Orthodontic Products, Itasca, IL, USA) results in differences in shear-peel bond strength when teeth are etched via the conventional acid-etching method and with self-etching primers (SEP), respectively. We also examined whether Pro Seal functions as a substitute for the bonding agents recommended by the manufacturers. MATERIAL AND METHODS To carry out this study, we randomly allocated 300 extracted molars (ISO 11405) into twelve groups (n=25). The brackets used (Victory Series, Twin UBi 0T/0A .022, 3M Unitek, Seefeld, Germany) were bonded using the same layer thickness of adhesive. The teeth were then stored for 24 h in de-ionized water (37 degrees C) and subsequently thermocycled. The brackets were debonded using a universal testing machine with a crosshead speed of 0.5 mm/min. For statistical evaluation we used the one-way analysis of variance (ANOVA [alpha = 0.05]) and the post hoc Tukey test and Weibull analysis. RESULTS We could establish that the use of Pro Seal does not have a negative influence on shear-peel bond strength. When the compomer Assure was used, Pro Seal even led to an increase in shear-peel bond strength, especially when it was applied using the bonding agent recommended by the manufacturer. The highest Weibull modulus (m) was found for the self-etching primer IDEAL 1 without using Pro Seal (m=6.5) and the lowest for First Step SEP when using Pro Seal (m=2.2). There were also clear differences in characteristic shear-peel bond strength (sigma(0)) within some of the groups investigated. CONCLUSIONS Although the statistical evaluation showed no significant negative influence on the shear-peel bond strength either when Pro Seal was used in addition, or when that fluoride-releasing, light-curing sealant was substituted for the bonding agent recommended by the manufacturer, the Weibull analysis showed that the use of Pro Seal in combination with SEP resulted in bond strength values that were less reliably reproducible.
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Affiliation(s)
- Ekaterini Paschos
- Department of Orthodontics, Ludwig-Maximilian-University Munich, Munich, Germany.
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Folwaczny M, Glas J, Török HP, Tonenchi L, Paschos E, Malachova O, Bauer B, Folwaczny C. Prevalence of the -295 T-to-C promoter polymorphism of the interleukin (IL)-16 gene in periodontitis. Clin Exp Immunol 2005; 142:188-92. [PMID: 16178875 PMCID: PMC1809474 DOI: 10.1111/j.1365-2249.2005.02902.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Interleukin (IL)-16 is involved in the regulation of the expression of several proinflammatory cytokines, i.e. tumour necrosis factor (TNF)alpha and interleukin (IL)-1beta. The present study aimed to determine the prevalence of the -295 promoter polymorphism of the interleukin (IL)-16 gene in periodontal disease. A total of 123 patients with periodontal disease and 122 healthy controls were genotyped for the -295 IL-16 promoter polymorphism. Genotyping has been performed by PCR and restriction fragment length polymorphism (RFLP) analysis. The frequencies of alleles and genotypes as well of haplotypes within both study groups were compared using the Pearson chi(2) test at a level of significance of 5% (P < 0.05). The distribution of genotypes for the -295 IL-16 gene polymorphism showed no significant difference between periodontitis patients and healthy control subjects (P = 0.886). Also stratification analysis according to the disease severity revealed no significant difference regarding the genotype distribution among both study groups. Herein the IL-16 -295 gene polymorphism was not associated with chronic periodontitis.
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Affiliation(s)
- M Folwaczny
- Poliklinik für Zahnerhaltung und Parodontologie, Standort Innenstadt, Ludwig-Maximilians Universität, München, Germany.
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Huth KC, Paschos E, Brand K, Hickel R. Effect of ozone on non-cavitated fissure carious lesions in permanent molars. A controlled prospective clinical study. Am J Dent 2005; 18:223-8. [PMID: 16296426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
PURPOSE To investigate, with a randomized controlled clinical study, the effect of ozone on non-cavitated initial occlusal fissure caries compared with untreated contra-lateral control lesions (split mouth) considering the patient's current caries risk. METHODS Forty-one patients with 57 pairs of lesions were enrolled in the study (mean age 7.7 +/- 2.2 years; upper jaw n=29, lower jaw n=28). Gaseous ozone (HealOzone) was applied once for 40 seconds to the randomly assigned test molar of each pair without the use of remineralizing solutions. Lesion progression or reversal was monitored by the laser fluorescence system DIAGNOdent for up to 3 months and the deterioration or improvement compared between the ozone-treated lesions and the untreated control lesions (in pairs). This was done for the whole study population and a subgroup of patients with high current caries risk (lesion pairs n=26). RESULTS After 3 months, explorative data analysis revealed that the ozone-treated lesions showed significantly more caries reversal or reduced caries progression than the untreated control lesions within the group of patients at high current caries risk (Wilcoxon-Test, P= 0.035). There was no statistical significance examining the whole study population. From the data it can be concluded that ozone application significantly improved non-cavitated initial fissure caries in patients at high caries risk over a 3-month period.
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Affiliation(s)
- Karin Christine Huth
- Department of Restorative Dentistry and Periodontology, Dental School, Ludwig-Maximilians-University, Goethe Street 70, D-80336 Munich, Germany.
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Paschos E, Huth KC, Fässler H, Rudzki-Janson I. Investigation of Maxillary Tooth Sizes in Patients with Palatal Canine Displacement. J Orofac Orthop 2005; 66:288-98. [PMID: 16044227 DOI: 10.1007/s00056-005-0435-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2004] [Accepted: 05/30/2005] [Indexed: 11/29/2022]
Abstract
AIM The aim of this retrospective trial was to investigate differences in mesiodistal and vestibulo-oral crown sizes of naturally, fully-erupted permanent maxillary teeth between patients with and without palatal canine displacement. PATIENTS AND METHOD 115 patients (mean age: 14 years 10 months; females: 77 males: 38) treated in the Department of Orthodontics, University of Munich were included in the study. 65 of the patients showed at least one palatally-displaced canine. Diagnosis and the location of the displacement were determined on the basis of standardized radiographs and confirmed by surgical documentation. Each maxillary tooth's mesiodistal and vestibulo-oral width was measured using a dial caliper on each dental cast. Excluded were partially-erupted teeth and surfaces with caries or restorations that had to be measured. An analysis of available space was made by evaluating the pre-treatment dental casts of all patients included in the study. RESULTS Comparing the tooth widths of patients with unilateral canine displacement with the corresponding contralateral quadrants, we noted a statistically significant difference, namely that the central and lateral incisors and the canines of the affected side were narrower than those of the non-affected side in the same patient. Moreover, the displaced upper canines showed an increase in vestibulo-oral dimension. Overall tooth width (including all tooth groups) in patients with palatally-displaced canines was significantly less than that in the control group. However, when comparing the crown diameters of unilaterally- and bilaterally-affected patients, no differences in tooth-size were observed. The space-analysis showed excessive dental-arch space in patients with a palatally-displaced canine. CONCLUSION Patients affected by palatal canine displacement showed significantly smaller maxillary tooth size.
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Affiliation(s)
- Ekaterini Paschos
- Department of Orthodontics, University of Munich, Goethestrasse 70, 80336 Munich, Germany.
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Hickel R, Kaaden C, Paschos E, Buerkle V, García-Godoy F, Manhart J. Longevity of occlusally-stressed restorations in posterior primary teeth. Am J Dent 2005; 18:198-211. [PMID: 16158813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
PURPOSE To compile a survey of the longevity and reasons for failure of stainless steel crowns, amalgam, glass-ionomer, composite and compomer restorations in stress-bearing cavities of primary molars. METHODS This work reviewed the dental literature of 1971 up to July 2003 for longitudinal, controlled clinical studies and retrospective cross-sectional studies. Only studies investigating the clinical performance of restorations in primary teeth with an observation period of at least 2 years were included. Annual failure rates of stainless steel crowns, amalgam, glass-ionomer, composite and compomer restorations were determined and failure reasons were discussed. RESULTS Annual failure rates in stress-bearing cavities of primary molars were determined to be: 0-14% for stainless steel crowns, 0-35.3% for amalgam restorations, 0-25.8% for glass-ionomer restorations, 2-29.1% for atraumatic restorative treatments, 0-15% for composite restorations, and 0-11 for compomer restorations. Main reasons for failure were secondary caries, marginal deficiencies, fracture, and wear.
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Affiliation(s)
- Reinhard Hickel
- Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University, Goethe Strasse 70, D-80336 Munich, Germany.
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Folwaczny M, Glas J, Török HP, Tonenchi L, Paschos E, Bauer B, Limbersky O, Folwaczny C. Polymorphisms of the interleukin-18 gene in periodontitis patients. J Clin Periodontol 2005; 32:530-4. [PMID: 15842270 DOI: 10.1111/j.1600-051x.2005.00711.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Interleukin (IL)-18 regulates the expression of the proinflammatory cytokine interferon (IFN)-gamma. The present study sought to test the putative involvement of six different IL-18 gene polymorphisms in pre-disposition to destructive periodontal disease. METHODS A total of 123 patients with periodontitis and 121 healthy controls were genotyped for six IL-18 polymorphisms at position -656, -607, -137, +113, +127 and codon 35/3. Genotyping has been performed by PCR and restriction fragment length polymorphism analysis. The frequencies of alleles and genotypes as well of haplotypes within both study groups were compared using the Pearson Chi-square test at a level of significance of 5% (p<0.05). RESULTS Coseggregation was found to be 100% for the two polymorphisms at position -656 and -607 as well as for the polymorphisms at position -137, +113, and +127. The distribution of genotypes for the IL-18 gene polymorphism at position -656/-607 (p=0.854), at position -137/+113/+127 (p=0.320), and at codon 35/3 (p=0.481) was not significantly different among periodontitis patients if compared with healthy control subjects. The distribution of haplotype combinations for the -607 and -137 polymorphism also showed not significant difference between the both study groups (p=0.545). CONCLUSION Herein the six different IL-18 gene polymorphisms were not associated with destructive periodontal disease.
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Affiliation(s)
- Matthias Folwaczny
- Poliklinik für Zahnerhaltung und Parodontologie, Standort Innenstadt, München, Germany.
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Fritz U, Rudzki-Janson I, Paschos E, Diedrich P. Light Microscopic and SEM Findings after Orthodontic Treatment?Analysis of a Human Specimen. J Orofac Orthop 2005; 66:39-53. [PMID: 15711899 DOI: 10.1007/s00056-005-0434-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2004] [Accepted: 11/24/2004] [Indexed: 10/25/2022]
Abstract
AIM The hard and soft tissue damage caused by orthodontic forces has so far, for obvious ethical reasons, been investigated in animal models primarily. However, the validity of these results as applied to humans remains controversial. The particular value of this study is that the maxilla of a young adult could be analyzed histologically. Thus it was possible to retrospectively study the effects of a routine orthodontic therapy using light microscopy. MATERIAL AND METHODS The upper jaw of a 24-year-old patient was investigated. He had been in orthodontic treatment with a straight-wire-appliance using superelastic materials for 18 months. Both posterior segments were analyzed in the horizontal plane using the microsection method according to Donath (toluidine blue staining). Both central incisors were analyzed using a scanning electron microscope (SEM). The examination was performed qualitatively and histomorphometrically. RESULTS 170 lateral root resorptions were found in the nine posterior teeth, while pressure sites and interference areas with the buccal and sinus cortical bone were predominantly affected. However, the extent of root resorption was minimal: mean length 979 +/- 766 microm, mean depth 208 +/- 133 microm. The lateral root erosions presented high repair potential: 55.6% of resorption length, and 28% of the depth were repaired in 76% of all lesions. CONCLUSION The incidence of detected root resorptions seems high at first. However, the prognosis of the affected teeth is not critically impaired, due to the lesions' minor extent (length, depth) and their high repair capacity.
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Affiliation(s)
- Ulrike Fritz
- Department of Orthodontics, University of Aachen, Pauwelsstrasse 30, Aachen, Germany.
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Huth KC, Manhart J, Selbertinger A, Paschos E, Kaaden C, Kunzelmann KH, Hickel R. 4-year clinical performance and survival analysis of Class I and II compomer restorations in permanent teeth. Am J Dent 2004; 17:51-5. [PMID: 15241910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
PURPOSE To evaluate the 4-year clinical performance of the compomer Hytac in Class I and II cavities of permanent posterior teeth. METHODS 53 compomer restorations were placed using the self-conditioning adhesive Hytac OSB (total bonding) without additional phosphoric acid-etching according to manufacturer's instructions. Restorations were rated (modified USPHS criteria) at baseline, after 6, 12, 18, 36 and 48 months in relation to tooth type (molar, premolar), size and class of cavities, isolation type (rubber dam, cotton rolls) and use of a calcium hydroxide liner. After 4 years, 39 restorations (73.6%) were available for examination. Statistical analysis was performed using Kaplan-Meier survival analysis with the logrank test and Fisher's exact test for the failure analysis. RESULTS After 4 years, the success rate was 84.6%, six restorations failed (15.4%). The average annual failure rate was therefore 3.85%. Loss of marginal integrity was the main cause of restoration failure. The probability that a restoration would remain clinically acceptable after 4 years was calculated to be 89% (Kaplan-Meier). No significant performance differences could be found between any of the restoration groups.
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Affiliation(s)
- Karin Christine Huth
- Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University, Goethe Street 70, 80336 Munich, Germany.
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Abstract
Ectodermal dysplasia is a rare hereditary disorder with a characteristic physiognomy. The case of a 5-year-old child with hypohidrotic ectodermal dysplasia and complete anodontia is presented. Because of the anodontia and the need for treatment at an early age, the prosthetic management of such a young child can be difficult. Complete dentures were provided to encourage a normal psychological development and to improve the function of the stomatognathic system.
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Affiliation(s)
- Ekaterini Paschos
- Department of Restorative Dentistry, Periodontology, and Pedodontics, Dental School of the University of Munich, Germany
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Abstract
Dentinogenesis imperfecta type II, also known as hereditary opalescent dentin, is an isolated inherited condition transmitted as an autosomal dominant trait affecting the primary and permanent dentition. The combined pedodontic-orthodontic management of a 4-year-old child is described. Following orthodontic analysis to encourage a favourable growth outcome, treatment comprised restoration of the primary teeth with stainless steel crowns and composite crowns. Differential diagnosis and alternative therapies, including orthodontic considerations, are discussed.
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Affiliation(s)
- K Ch Huth
- Department of Restorative Dentistry, Periodontology and Pedodontics, Dental School of the Ludwig-Maximilians-University, Munich, Germany.
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Abstract
MATERIAL AND METHOD We present a retrospective analysis of periodontal tissue reactions and clinically relevant phases of permanent tooth eruption and deciduous tooth resorption after half a year of orthodontic tooth movement in the upper and lower jaw of a deceased male (age 9 years 3 months). Specimens of the horizontal plane (lower jaw) and sagittal plane (upper jaw) were prepared by the ground microsection technique without prior decalcification. RESULTS Histologically, reactions in the periodontal ligament presented as characteristic appositional/resorptive metaplastic processes in the areas of tension and pressure, with side effects such as root resorption and periodontal necrosis being only minor. In the upper jaw, an erupting permanent canine was closely associated with the tooth germ of the first premolar. Resorptive follicle activity had resulted in extensive erosion of the interradicular bone and root resorption in the area of the first premolars. CONCLUSION These findings suggest that it might prove useful to take critical topographic findings as parameters for differential therapeutic decisions. Follicle-driven deciduous tooth resorption presenting partly as resorption lacunae and partly with linear characteristics was accompanied by resorptive/appositional remodeling of the alveolar socket as well as regressive changes in the supracrestal fibers of the marginal gingiva.
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