Knösel, Michael

[["dc.bibliographiccitation.firstpage","160"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Clinical Implant Dentistry and Related Research"],["dc.bibliographiccitation.lastpage","165"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Engelke, Wilfried G. H."],["dc.contributor.author","Mueller, Alois"],["dc.contributor.author","Decco, Oscar A."],["dc.contributor.author","Rau, Maria J."],["dc.contributor.author","Cura, Andrea C."],["dc.contributor.author","Ruscio, Mara L."],["dc.contributor.author","Knoesel, Michael"],["dc.date.accessioned","2018-11-07T09:26:31Z"],["dc.date.available","2018-11-07T09:26:31Z"],["dc.date.issued","2013"],["dc.description.abstract","Aim: The study aims to provide objective data for the displacement of titanium screw implants in trabecular bone specimens. One hundred Semados implants (Bego, Bremen, Germany) were inserted in bovine type IV bone specimens. All implants had a diameter of 3.75mm; 50 implants had a length of 8.5mm and 50 implants had a length of 15mm. Insertion torque was determined at intervals of 10, 20, and 30Ncm. Implants were loaded horizontally with 10, 20, and 30N for 2 seconds. An indicator strip was attached to the implant abutment to allow direct observation of implant movement relative to the bone surface. Horizontal displacement was assessed with an accuracy of measurement of 10 mu m. Seven implants got lost by visible loosening. Degree of displacement was subject to evaluation with all others. Those implants showed a mean displacement of 59 mu m for 10N (n=100), 173 mu m for 20N (n=99), and 211 mu m for 30N (n=93). The mean displacement of 15-mm implants (16, 37, 51 mu m) was significantly lower compared with 8.5-mm implants (103, 311, 396 mu m) corresponding to 10, 20, and 30N as lateral loads. Conclusions: Displacement of screw implants in trabecular bone can be detected and visualized using commercially available endoscopes with a high magnification. A lateral load of 20N indicates a mean displacement of over 100 mu m and therefore results in a critical displacement."],["dc.identifier.doi","10.1111/j.1708-8208.2011.00338.x"],["dc.identifier.isi","000317289700002"],["dc.identifier.pmid","21682842"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30320"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1523-0899"],["dc.title","Displacement of Dental Implants in Trabecular Bone under a Static Lateral Load in Fresh Bovine Bone"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","574"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","American Journal of Orthodontics and Dentofacial Orthopedics"],["dc.bibliographiccitation.lastpage","582"],["dc.bibliographiccitation.volume","141"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Bojes, Mariana"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2018-11-07T09:10:45Z"],["dc.date.available","2018-11-07T09:10:45Z"],["dc.date.issued","2012"],["dc.description.abstract","Introduction: There is a paucity of information with regard to the susceptibility of iatrogenic white spot lesion formation after inattentive, surplus orthodontic etching with 30% phosphoric acid and the subsequent provision or absence of adequate oral hygiene. Methods: Ninety sound enamel specimens were randomly allocated to 6 trial groups (n = 15 each) for etching with 30% phosphoric acid for either 15 seconds and standardized daily enamel brushing or no brushing, etching for 30 seconds with daily brushing or no brushing, or nonetched controls with brushing or no brushing. Nutritive acidic assaults were simulated by demineralization cycles 3 times per day for 1 hour with interim storage in artificial saliva. Lesion depths in terms of percentage of fluorescence loss (delta F, delta Q) and lesion extension compared with the baseline were assessed by using quantitative light-induced fluorescence after 2, 7, 14, 21, and 42 days. Etching duration, trial time elapse, and oral hygiene, as well as the significance of factor interactions, were analyzed with 3-way analysis of variance (alpha - 5%). Results: The impact of the factors of enamel brushing, trial time elapse, and etching each had a comparably significant effect on lesion progression. The effect of surplus etching on white spot lesion formation was significantly enhanced by the simultaneous absence of enamel brushing and also the progression of trial time. The combination of 30 seconds of surplus etching with inadequate oral hygiene was especially detrimental. Conclusions: Excessive surplus orthodontic etching of the complete labial enamel surface, instead of the bracket bases only, must be avoided to prevent iatrogenic white spot lesions. Etching times not exceeding 15 seconds are favorable. (Am J Orthod Dentofacial Orthop 2012;141:574-82)"],["dc.identifier.doi","10.1016/j.ajodo.2011.11.017"],["dc.identifier.isi","000303606100019"],["dc.identifier.pmid","22554751"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26563"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mosby-elsevier"],["dc.relation.issn","0889-5406"],["dc.title","Increased susceptibility for white spot lesions by surplus orthodontic etching exceeding bracket base area"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","747"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","The Angle Orthodontist"],["dc.bibliographiccitation.lastpage","754"],["dc.bibliographiccitation.volume","79"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Gripp-Rudolph, Liliam"],["dc.contributor.author","Attin, Thomas"],["dc.contributor.author","Attin, Rengin"],["dc.contributor.author","Sadat-Khonsari, Reza"],["dc.contributor.author","Kubein-Meesenburg, Dietmar"],["dc.contributor.author","Bauss, Oskar"],["dc.date.accessioned","2018-11-07T08:27:55Z"],["dc.date.available","2018-11-07T08:27:55Z"],["dc.date.issued","2009"],["dc.description.abstract","Objective: To test the null hypothesis that third-order measurements are not correlated to lingual incisor features seen on radiographs. Material and Methods: The lateral headfilms of 38 untreated, norm-occlusion subjects without incisor abrasions or restorations were used for third-order measurements of upper and lower central incisors and assessment of the inclination of four sites suitable for lingual bracket placement with reference to the occlusal plane perpendicular. Lingual sections were determined by the tangents at the incisal fossa (S1), at the transition plateau between incisal fossa and the cingulum (S2), by a constructed line reaching from the incisal tip to the cingulum (S3), and by a tangent at the cingulum convexity (S4). Third-order angles were also assessed on corresponding dental casts using an incisor inclination gauge. Regression analysis was performed using the third-order measurements of both methods as the dependent variables and the inclination of the lingual enamel sections (S1, S2, S3, S4) as the independent variables. Results: The null hypothesis was rejected. For the most common bracket application sites located on the lingual shovel (S1 and S2), third-order inclination changes of 0.4-0.7 degrees are expected for each degree of change in the inclination of the lingual surface. The impact of bracket placement errors on third-order angulation is similar between sections S1 and S2 and the cingulum convexity (S4). Section S3 proved to be least affected by interindividual variation. Conclusion: The third-order measurements are correlated to lingual incisor features. Accordingly, third-order changes resulting from variation in lingual bracket placement can be individually predicted from radiographic assessments. (Angle Orthod. 2009;79:747-754.)"],["dc.identifier.doi","10.2319/072308-385.1"],["dc.identifier.isi","000267712600019"],["dc.identifier.pmid","19537870"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5790"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16306"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","E H Angle Education Research Foundation, Inc"],["dc.relation.issn","0003-3219"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Changes in Incisor Third-Order Inclination Resulting from Vertical Variation in Lingual Bracket Placement"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","454"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","The Angle Orthodontist"],["dc.bibliographiccitation.lastpage","461"],["dc.bibliographiccitation.volume","79"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Attin, Thomas"],["dc.contributor.author","Engelke, Wilfried G. H."],["dc.contributor.author","Kubein-Meesenburg, Dietmar"],["dc.contributor.author","Gripp-Rudolph, Liliam"],["dc.contributor.author","Attin, Rengin"],["dc.date.accessioned","2018-11-07T08:30:05Z"],["dc.date.available","2018-11-07T08:30:05Z"],["dc.date.issued","2009"],["dc.description.abstract","Objective: To evaluate the significance of crown-root angles (CRAs) by testing the null hypothesis that there are no significant differences in deviations of third-order angles to axial inclination values between Angle Class II division 2 incisors and a neutral occlusion control sample. Materials and Methods: The study group comprised n(total) = 130 whites with either Angle Class II division 2 (n(1) = 62; group A) or neutral (n(2) = 68; control group B) occlusal relationships. Upper central incisor inclination (U1) was assessed with reference to the cephalometric lines NA and palatal plane (U1NA/deg, U1PP/deg). Craniofacial sagittal and vertical relations were classified using angles SNA, SNB, ANB, and NSL-PP. Third-order angles were derived from corresponding dental cast pairs using an incisor inclination gauge. Welch's two-sample t-tests (alpha-level:.05) were used to test the null hypothesis. Single linear regression was applied to determine third-order angle values as a function of axial inclination values (U1NA, U1PP) or sagittal craniofacial structures (ANB angle), separately for group A and B. Results: The discrepancy between axial inclination (U1NA, U1PP) and third-order angles is significantly different (P <.001) between groups A and B. Regression analysis revealed a simply moderate correlation between third-order measurements and axial inclinations or sagittal craniofacial structures. Conclusion: The hypothesis is rejected. The results of this study warn against the use of identical third-order angles irrespective of diminished CRAs typical for Angle Class II division 2 subjects. Routine CRA assessment may be considered in orthodontic treatment planning of Angle Class II division 2 cases. (Angle Orthod. 2009;79:454-461.)"],["dc.identifier.doi","10.2319/042508-234"],["dc.identifier.isi","000266052200008"],["dc.identifier.pmid","19413389"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5785"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16807"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0003-3219"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","On the Interaction between Incisor Crown-Root Morphology and Third-Order Angulation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","532"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","The Angle Orthodontist"],["dc.bibliographiccitation.lastpage","539"],["dc.bibliographiccitation.volume","81"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Jung, Klaus"],["dc.date.accessioned","2018-11-07T08:56:38Z"],["dc.date.available","2018-11-07T08:56:38Z"],["dc.date.issued","2011"],["dc.description.abstract","Objective: To assess the informational value, intention, source, and bias of videos related to orthodontics screened by the video-sharing Internet platform You Tube. Methods: You Tube (www.youtube.com) was scanned in July 2010 for orthodontics-related videos using an adequately defined search term. Each of the first 30 search results of the scan was categorized with the system-generated sorts \"by relevance\" and \"most viewed\" (total: 60). These were rated independently by three assessors, who completed a questionnaire for each video. The data were analyzed statistically using Friedman's test for dependent samples, Kendall's tau, and Fleiss's kappa. Results: The You Tube scan produced 5140 results. There was a wide variety of information about orthodontics available on You Tube, and the highest proportion of videos was found to originate from orthodontic patients. These videos were also the most viewed ones. The informational content of most of the videos was generally judged to be low, with a rather poor to inadequate representation of the orthodontic profession, although a moderately pro-orthodontics stance prevailed. It was noticeable that the majority of contributions of orthodontists to You Tube constituted advertising. This tendency was not viewed positively by the majority of You Tube users, as was evident in the divergence in the proportions when sorting by \"relevance\" and \"most viewed.\" Conclusion: In the light of the very large number of people using the Internet as their primary source of information, orthodontists should recognize the importance of You Tube and similar social media Web sites in the opinion-forming process, especially in the case of adolescents. (Angle Orthod. 2011;81:532-539.)"],["dc.identifier.doi","10.2319/091710-541.1"],["dc.identifier.isi","000289761800025"],["dc.identifier.pmid","21261492"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8017"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23198"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","E H Angle Education Research Foundation, Inc"],["dc.relation.issn","0003-3219"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Informational value and bias of videos related to orthodontics screened on a video-sharing Web site"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","391"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","QUINTESSENCE INTERNATIONAL"],["dc.bibliographiccitation.lastpage","399"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Attin, Rengin"],["dc.contributor.author","Becker, Klaus"],["dc.contributor.author","Attin, Thomas"],["dc.date.accessioned","2018-11-07T11:15:49Z"],["dc.date.available","2018-11-07T11:15:49Z"],["dc.date.issued","2008"],["dc.description.abstract","Objective: To evaluate the effect of external bleaching on the color and luminosity of fluorotic stains and adjacent, normally mineralized enamel areas by means of CIE L a b colorimetry. Method and Materials: Eighteen adolescents with mild to moderate fluorotic stains were randomly assigned to either bleaching group A ( n = 9) or control group B. Eligibility criteria were fluorotic stained maxillary incisors or canines and the informed consent of the participants and their guardians. Using a colorimeter, CIE L a b values of maxillary incisors and canines were assessed at baseline ( T1) in the center of the fluorotic stained area ( F1) and at adjacent, normally mineralized enamel areas ( F2). Then, external bleaching with Illumine office ( 30% hydrogen peroxide, Dentsply DeTrey) was performed for 60 minutes, followed by color reassessment ( T2). After 14 days ( T3), a 2-week home bleaching period with a daily bleaching time of 1 hour with Illumine home ( 15% carbamide peroxide, Dentsply DeTrey) was conducted with subsequent color determination ( T4). Results: After completion of bleaching therapy, 96.0% of all fluorotic areas ( F1) and 100% of normal enamel areas ( F2) showed a significant change within group A, compared to 29.4% in control group B. Comparing the collective Delta E ( L , a , b ) of F1 and F2, 60.0% of all areas showed significant differences after completion of bleaching therapy, compared to 88.0% initially. Of group B sites, 82.4% showed color differences in the beginning ( T1) and 88.2% at the end ( T4). Conclusion: Whereas a single 1-hour session of in-office bleaching with 30% hydrogen peroxide does not significantly affect the color and luminosity of fluorotic teeth, a 14-day period of home bleaching leads to an assimilation of the color of the fluorotic stain with the color of surrounding enamel areas due to different responses of sound and fluorotic enamel to the bleaching regime."],["dc.identifier.isi","000257892600004"],["dc.identifier.pmid","19088953"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/54450"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Quintessence Publishing Co Inc"],["dc.relation.issn","0033-6572"],["dc.title","A randomized CIE L a b evaluation of external bleaching therapy effects on fluorotic enamel stains"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","315"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The Angle Orthodontist"],["dc.bibliographiccitation.lastpage","323"],["dc.bibliographiccitation.volume","86"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Fendel, Christine"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Sandoval, Paulo"],["dc.contributor.author","Engelke, Wilfried G. H."],["dc.date.accessioned","2018-11-07T10:17:53Z"],["dc.date.available","2018-11-07T10:17:53Z"],["dc.date.issued","2016"],["dc.description.abstract","Objective: To test the null hypothesis of no significant difference between intraoral pressure characteristics in infants with cleft lip and palate (CLP) with or without presurgical orthopedic (PSO) plates (groups CLP and CLP-PSO), compared with noncleft infants. Materials and Methods: Intraoral atmospheric pressure assessments were performed on 17 subjects with preoperative CLP (m/f, 11/6; mean/SD, 4.76/0.92 months) and a matched control group (n = 24; m/f, 15/9; mean/SD, 4.88/0.9 months), for 200 seconds, simultaneously at the vestibulum (vestibular space [VS]) and at the palate (subpalatal space [SPS]), using a prepared pacifier connected to a digital manometer. Areas under the pressure curves (AUC), frequencies, durations, and magnitudes of swallowing peaks and pressure resting plateaus were compared between trial groups and locations (VS, SPS) using a two-factor analysis of variance for repeated measures, Kruskal-Wallis test, and Mann-Whitney U-test (alpha = .05). Results: The null hypothesis was rejected: Globally, there were statistically significant differences in intraoral pressure characteristics between groups CLP, CLP-PSO, and control (all P < .01), with significantly higher negative pressures (AUC) in the control subjects compared with those of CLP or CLP-PSO. There were significant effects by the location of pressure recordings (VS, SPS) and their interaction with all treatment groups. Differences between noncleft and CLP subjects were more pronounced in the VS than in the SPS. There was no significant effect by PSO. Conclusion: PSO does not improve deviated swallowing characteristics during suction in CLP infants."],["dc.identifier.doi","10.2319/021215-98.1"],["dc.identifier.isi","000371186300020"],["dc.identifier.pmid","25993249"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41312"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","E H Angle Education Research Foundation, Inc"],["dc.relation.issn","1945-7103"],["dc.relation.issn","0003-3219"],["dc.title","Presurgical orthopedics by drink plates does not significantly normalize deglutition in infants with cleft lip and palate"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","19"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","European Journal of Orthodontics"],["dc.bibliographiccitation.lastpage","24"],["dc.bibliographiccitation.volume","34"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Reus, Monika"],["dc.contributor.author","Rosenberger, Albert"],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2018-11-07T09:13:57Z"],["dc.date.available","2018-11-07T09:13:57Z"],["dc.date.issued","2012"],["dc.description.abstract","The Commission Internationale de l'Eclairage (CIE) L a b three-dimensional coordinates suggest strong correlations between the data of a (red-green axis) and b (blue-yellow axis), as both are located on the same plane in the model and should therefore show a strong dependency. In order to assess the veridicality of colour determinations, the null hypothesis of no significant changes in CIE-a /b coherences of dental colours following a colour or lightness change induced by external dental bleaching was tested. Values from 231 extracted anterior teeth were assessed using the digital photographic CIELAB recalculation method. Teeth were then assigned to three groups (n = 77) with contrasting baseline CIE-L values. Group A served as the control with no alteration in dental colour. The specimens in the two other groups were altered in colour or lightness employing treatment with either 15 per cent carbamide peroxide (group B) or 38 per cent hydrogen peroxide (group C). Pearson's pairwise correlation coefficient of CIE-L ; a , CIE-L ; b , and CIE-a ; b were calculated for assessments at baseline (T0) and after 2 (T1), 4 (T2), 12 (T3), and 24 (T4) weeks. The correlations of a and b from T0 to T4, in relation to group A, were stable, with coefficients of 0.78 -> 0.65 -> 0.65 -> 0.69 -> 0.67. Bleaching-induced colour and lightness changes did not have a significant influence on the a /b coherences assessed. A distinctly weaker and inverse relationship was observed between L and a values and between L and b values in the groups, with correlation coefficients ranging from -0.54 to -0.12. Colour coherences detected at specific points in time were in agreement with theoretical CIE colour coherences. In order to compare the methodology of different colour analyses, the analysis of correlations between CIE-a and -b values is advocated as an additional routine test in future CIELAB studies."],["dc.identifier.doi","10.1093/ejo/cjq142"],["dc.identifier.isi","000299746200003"],["dc.identifier.pmid","21289016"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27290"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","0141-5387"],["dc.title","A novel method for testing the veridicality of dental colour assessments"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1558"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Journal of Dental Education"],["dc.bibliographiccitation.lastpage","1568"],["dc.bibliographiccitation.volume","75"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Bleckmann, Annalen"],["dc.date.accessioned","2018-11-07T08:49:11Z"],["dc.date.available","2018-11-07T08:49:11Z"],["dc.date.issued","2011"],["dc.description.abstract","The objective of this study was to systematically assess the informational value, intention, source, and bias of videos related to dentistry available on the video-sharing Internet platform YouTube. YouTube (www.youtube.com) was searched for videos related to dentistry, using the system-generated sorts \"by relevance\" and \"most viewed\" and two categories (All and Education). Each of the first thirty results was rated by two assessors filling out a questionnaire for each (total: 120). The data were subjected to statistical analysis using Cohen's kappa, Pearson's correlation coefficient tau, Mann-Whitney U-tests, and a nonparametric three-way ANOVA, including an analysis of the interaction between the sorting and category effect, with an a-level of 5 percent. The scan produced 279,000 results in the category All and 5,050 in the category Education. The analysis revealed a wide variety of information about dentistry available on YouTube. The purpose of these videos includes entertainment, advertising, and education. The videos classified under Education have a higher degree of usefulness and informational value for laypersons, dental students, and dental professionals than those found in a broader search category. YouTube and similar social media websites offer new educational possibilities that are currently both underdeveloped and underestimated in terms of their potential value. Dentists and dental educators should also recognize the importance of these websites in shaping public opinion about their profession."],["dc.identifier.isi","298066500004"],["dc.identifier.pmid","22184594"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21397"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Dental Education Assoc"],["dc.relation.issn","0022-0337"],["dc.title","You Tube, Dentistry, and Dental Education"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","547"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","European Journal of Orthodontics"],["dc.bibliographiccitation.lastpage","555"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Knoesel, Michael"],["dc.contributor.author","Jung, Klaus"],["dc.contributor.author","Attin, Thomas"],["dc.contributor.author","Attin, Rengin"],["dc.contributor.author","Kubein-Meesenburg, Dietmar"],["dc.contributor.author","Gripp-Rudolph, Liliam"],["dc.date.accessioned","2018-11-07T11:23:35Z"],["dc.date.available","2018-11-07T11:23:35Z"],["dc.date.issued","2009"],["dc.description.abstract","Lateral cephalograms and corresponding dental casts were obtained from 39 untreated Caucasians (12 males, 27 females; mean age 19.5 years; standard deviation 3.7 years) with occlusal relationships considered to be 'normal'. The upper (U1) and lower (L1) incisors were assessed with reference to the occlusal plane perpendicular which was established on the lateral radiographs, including third order angles (U1TR, L1TR) which were also derived from direct dental cast measurements (U1TA, L1TA). Both single regression and multiple linear regression analysis with stepwise variable selection were performed using third order measurements on casts as the dependent variable and crown axis (U1C, L1C), root axis (U1R, L1R), tip-apex connecting line (U1E, L1E), and radiographic third order measurements as independent variables. Single regression analysis indicated an overall difference of 0.02 degrees between radiographic third order inclination and cast assessment in the maxilla (mandible: -2.83 degrees). A change of 1 degree in radiographic third order inclination would produce a change of 0.65 degrees for U1TA and 0.86 degrees for L1TA assessments. Third order measurements on dental casts can best be explained by a linear combination of U1TR and U1E (maxilla) and of L1TR and L1C (mandible) measurements. This study demonstrates the functional enmeshment between two different third order assessments and the most common incisor features on lateral radiographs. Both methods of third order evaluation show sufficient reliability and are appropriate for routine orthodontic practice."],["dc.identifier.doi","10.1093/ejo/cjp011"],["dc.identifier.isi","000270217900013"],["dc.identifier.pmid","19447839"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56227"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","0141-5387"],["dc.title","Systematic evaluation of the features influencing the accuracy of third order measurements"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]