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| 1 | Three-dimensional analysis of the physiological foramen geometry of maxillary and mandibular molars by means of micro-CT显示文摘The aim of this study was to investigate the physiological foramen diameter, shape and distance between physiological and anatomical apex of maxillary and mandibular first and second molars. Accurate knowledge of the physiological foramina morphology; thus, inherent mechanical shaping technical hindrances, is decisive when taking the corresponding root canal final preparation decision. The morphological dimensions of a total of 1 727 physiological foramina were investigated by means of micro-computed tomography. Mean narrow and wide(to a high number, oval) diameters of the physiological foramen were 0.24,0.22 and 0.33 mm and 0.33, 0.31 and 0.42 mm in mesiobuccal(MB), distobuccal(DB) and palatal(P) roots in maxillary first molars; 0.24, 0.22 and 0.33 mm and 0.41, 0.33 and 0.44 in MB, DB, and P roots in maxillary second molars. Mandibular first molars showed mean narrow and wide diameters of 0.24 and 0.30 mm and of 0.39 and 0.46 mm in mesial(M) and distal(D)roots; second mandibular molars showed 0.25 and 0.31 mm and 0.47 mm in M and D roots. The mean distance between the physiological foramina and anatomical apex was 0.82, 0.81 and 1.02 mm and 0.54, 0.43 and 0.63 mm in MB, DB and P roots of the maxillary first and second molars, respectively. A mean distance of 0.95 mm(M) and 1.05 mm(D) in the first and0.78 mm(M) and 0.81 mm(D) in the second mandibular molars was observed. Based on the results obtained, assumable recommendations for final preparation size of the physiological foramen were calculated. However, when taking into consideration, the resulting standard deviations of marginal errors must be cautiously considered when taking a final decision in clinical endodontic treatment. | Thomas Gerhard Wolf Frank Paqué Michael Sven Patyna Brita Willershausen Benjamín Briseno-Marroquín | 2017 | International Journal of Oral Science2017，9，3： | 4 |
| 2 | Root canal morphology and configuration of 123 maxillary second molars by means of micro-CT显示文摘The aim of this study was to investigate the root canal configuration, accessory canals and number of main foramina of 123 maxillary second molars by means of micro-computed tomography. The teeth were scanned and reproduced with 3D software imaging. The root canal configuration and number of main foramina were evaluated by means of a four-digit system. The morphological complexity of human maxillary second molars is depicted by the number of accessory and connecting canals. The most frequently observed root canal configurations in the mesiobuccal root were 2-2-2/2(19.5%), 2-2-1/1(14.6%) and 2-1-1/1(13.0%). A 1-1-1/1 configuration was observed in 93.5% and in 96.7% in the distobuccal and palatal roots, respectively. The MB1 root canal had one accessory canal(18.7%), and 8.9% of the MB2 root canal had one or two accessory canals. The distobuccal(11.3%) and palatal(14.6%) root canals had at least one accessory canal, and connecting canals were observed in16.3% of mesiobuccal roots. The MB1, MB2, distobuccal and palatal root canals had one main foramen in 99.2%, 43.1%,98.4% and 99.2% of samples, respectively. In the mesiobuccal root, one accessory foramen was detected in 14.6%, two were detected in 7.3%, and three were detected in 5.7%. The distobuccal root showed one or two accessory foramina in 9.1% of samples. The root canal configuration of maxillary second molars is quite heterogeneous; the mesiobuccal root has predominantly two root canal entrances(58.4%, 1 in 41.1%) with one main foramen(54.4%). Two main foramina were observed in 43.0%. Morphological variations, connecting and accessory canals were observed in all apical thirds. | Thomas Gerhard Wolf Frank Paqué Anja-Christin Woop Brita Willershausen Benjamín Briseno-Marroquín | 2017 | International Journal of Oral Science2017，9，1： | 3 |
| 3 | Bioavailability of different phosphorus forms in freshwater systems显示文摘 | Bengt Bostr?m Gunnar Persson Brita Broberg | 1988 | Hydrobiologia1988，，1： | 1 |
| 4 | Effect of intravenousanesthetics on spon-lancous and endotoxin-stimullated cytokine response in cultured buman whole blood显示文摘 | Brita L Gudrun H Wolfram W | 1998 | Anesthesiology1998，89，： | 1 |
| 5 | Restricted carbon emissions and directed R&D support an applied general equilibri- um analysis 显示文摘 | Brita Bye Karl Jacobsen | 2011 | Energy Economics2011，，33： | 1 |
| 6 | Lay attitudes to dental appearance and need for orthodontic treatment显示文摘 | Stenvik A Espeland L Brita OL | 1997 | Eur J Orthod1997，19，3： | 1 |
| 7 | Ultrastructure of the age-involuted adult human thymus显示文摘 | Priv.-Doz. Dr. Brita Gaudecker | 1978 | Cell and Tissue Research1978，，3： | 1 |
| 8 | Evolution of fracture and fault controlled fluid pathways in carbonates of the Albanides fold thrust belt显示文摘 | Brita R W Radu G Agim M | 2006 | AAPG Bulletin2006，90，8： | 1 |
| 9 | Alternative designs for tariffs on embodied carbon:A global cost-effectiveness analysis显示文摘 | Christoph B?hringer Brita Bye Taran F?hn etc | 2012 | Energy Economics2012，，34： | 1 |
| 10 | In- fluence of Instrument Size on the Accuracy of Different Apex Loca- tors: An In Vitro Study 显示文摘 | Benjamin Briseno -Marroquin PbD MS DDS Santiago Frajlicb DDS Fernando Goldberg DDS Brita Willersbausen PhD DDS | 2008 | Basic Research Technology2008，66，34： | 1 |
| 11 | Sol–gel derived TiO2 wood composites显示文摘 | Thomas Hübert Brita Unger Michael Bücker | 2010 | Journal of Sol - Gel Science and Technology2010，，2： | 1 |
| 12 | Evolution of fracture and fault - controlled fluid pathways in carbonates of the Albanides fold - thrust belt 显示文摘 | Brita R Graham W Radu G | 2006 | AAPG Bulletin2006，90，8： | 1 |
| 13 | Quality of Life in Patients With Brain Metastases Using the EORTC QLQ-BN20+2 and QLQ-C15-PAL显示文摘 | Amanda Caissie Janet Nguyen Emily Chen Liying Zhang Arjun Sahgal Mark Clemons Marc Kerba Palmira Foro Arnalot Cyril Danjoux May Tsao Elizabeth Barnes Lori Holden Brita Danielson Edward Chow | 2012 | International Journal of Radiation Oncology Biology Physics2012，，4： | 1 |
| 14 | Competition between Sphagnum and Drosera rotundifolia : A Case of Ecosystem Engineering 显示文摘 | Brita M Svensson | 1995 | Oikos1995，74，： | 1 |
| 15 | Evolution of fracture and fault-controlled fluid pathways in carbonates of the Albanides fold-thrust belt 显示文摘 | BRITA R GRAHAM W GIRBACEA R MESONJESI A | 2006 | AAPG Bulletin2006，90，8： | 1 |
| 16 | RAPD variation in Solanum anguivi Lam. and S. aethiopicum L. (Solanaceae) in Uganda显示文摘 | Brita Stedje Remiguis Bukenya-Ziraba | 2003 | Euphytica2003，，3： | 1 |
| 17 | Immunotherapy of malignant brain tumors in children and adults: from theoretical principles to clinical application显示文摘 | P. M. Zeltzer Brita Moilanen John S. Yu Keith L. Black | 1999 | Child’s Nervous System1999，，10： | 1 |
| 18 | Lay attitudes to dental appearance and need for orthodontic treatment 显示文摘 | Stenvik A Espeland L Brita OL | 1997 | Eur J Orthod1997，19，3： | 1 |
| 19 | Lay attitudes to dentalappearance and need for orthodontic treatment显示文摘 | Stenvik A Espeland LV Brita O | 1997 | Am J Orthod1997，19，： | 1 |
| 20 | The choice of anesthetic maintenance technique influences the anti - inflammatory cytokine response to abdominal surgery 显示文摘 | BRITA L GUDRUN H WOLFRAM W | 1997 | Anesthesiology1997，85，： | 1 |
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