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https://www.readbyqxmd.com/read/29691563/-clinical-analysis-of-spectrum-ct-imaging-reducing-metal-artifacts-of-oral-and-maxillofacial-region
#1
Qi Sun, Min-Jun Dong, Xing Yang, Meng-da Jiang, Xiao-Feng Tao
PURPOSE: To assess the capability of monochromatic energy images of gemstone spectral imaging(GSI) by using spectral CT in reducing metal artifacts of oral and maxillofacial region. METHODS: Spectral CT imaging was applied to 46 patients with metallic implants with GSI sequence to measure CT numbers (expressed in Hounsfield units, HU) and SD (standard deviation) numbers of the soft tissues. 11 monochromatic-image groups were obtained, ranging from 40 keV(kiloelectronvolts) to 140 keV (every 10 keV as one group)...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29691558/-study-of-three-dimensional-anatomical-relationship-between-infrazygomatic-crest-and-maxillary-sinus-for-mini-screw-insertion
#2
Peng Wang, Zheng-Xi Chen, Jun Wu, Zhen-Qi Chen
PURPOSE: To measure the thickness of the infrazygomatic(IZ) crest above the maxillary first molar and analyze its relationship with maxillary sinus as to derive clinical implications and provide guidance for placements of orthodontic mini-screw. METHODS: Thirty seven cone-beam CT(CBCT) images of infrazygomatic crest sites were collected from data of 19 adult inter-treatment orthodontic patients. Based on the relationship of maxillary sinus floor and mesiobuccal root of the maxillary first molar, the subjects were divided into high sinus floor group (n=13) and low sinus floor group (n=24)...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29691555/-clinical-research-for-non-extraction-treatment-of-maxillary-mild-to-moderate-crowding-with-damon-technology
#3
Wei Zhang, Chuan-Jie Yan, Li Li
PURPOSE: To compare the clinical efficacy of non-extraction treatment in maxillary mild-to-moderate crowding cases with Damon self-ligating system and Roth traditional brackets. METHODS: Sixty skeletalⅠorthodontic patients were selected in this study. They were divided into DamonⅠ, RothⅠ, DamonⅡ and RothⅡ group according to the bracket species and maxillary crowding degrees. Lateral cephalometric radiographs and models were measured before and after aligning and leveling to analyze the changes in dental arch and soft and hard tissue using SPSS 19...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29687099/perception-of-facial-esthetics-by-different-observer-groups-of-class-ii-malocclusion-with-mandibular-retrusion
#4
Joana Ribas, Maria Paço, Teresa Pinho
AIM: To compare the esthetic perception of different observer groups of 14 photos of two patients with Class II, division 1 malocclusion with severe mandibular retrusion. MATERIALS AND METHODS: A sample of 441 participants, of which 191 were laypeople, was obtained through a snowball sampling method. Fourteen photos of two children with Class II, division 1 malocclusion with severe mandibular retrusion were used, before and after orthodontic treatment (OT), with advance genioplasty simulation...
2018: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/29685525/is-the-cervical-vertebral-maturation-cvm-method-effective-enough-to-replace-the-hand-wrist-maturation-hwm-method-in-determining-skeletal-maturation-a-systematic-review
#5
REVIEW
Agnieszka Szemraj, Anna Wojtaszek-Słomińska, Bogna Racka-Pilszak
INTRODUCTION: Chronological age provides only general information on the development of a child/adolescent. However, the biological age of the patient is more significant. One of the methods is the determination of the bone age based on the development of the hand and wrist bones. In 1972 a method for assessing cervical vertebral maturation on the cephalometric radiographs was introduced (CVM method). As a result, additional patient radiation was eliminated. Currently, this type of radiograph is routinely applied in orthodontic treatment...
May 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29682226/surgical-approach-to-malformation-of-maxillary-central-incisor-following-trauma-to-its-predecessor-two-case-reports
#6
Gerardo La Monaca, Iole Vozza, Susanna Annibali, Rita Giardino, Nicola Pranno, Maria Paola Cristalli
In the case reports, two different approaches have been described to treat the developmental disturbances in the maxillary central incisors due to trauma to its predecessor. The treatment plan was chosen according to the type and severity of the malformations, the exact location and the morphology of the involved teeth. In the first case, the disimpaction of the maxillary right central incisor was achieved with the combined of surgical and orthodontic therapy, that was planned in two consecutive stages. In the second case the severe root angulation and the failure of the previous orthodontic traction made impossible the repositioning of the upper right central incisor, which was surgical removed...
September 2017: Annali di Stomatologia
https://www.readbyqxmd.com/read/29681233/topical-oral-wound-healing-potential-of-anthocyanin-complex-animal-and-clinical-studies
#7
Sucharat Limsitthichaikoon, Bhattaranitch Khampaenjiraroch, Teerasak Damrongrungruang, Wanwisa Limphirat, Suthasinee Thapphasaraphong, Aroonsri Priprem
AIM: An anthocyanin complex (AC), combined Zea mays and Clitoria ternatea extracts, was evaluated for topical oral wound healing in rats and a clinical trial in orthodontic patients. METHODS/RESULTS: AC enhanced anthocyanin permeation in vitro. In rats, 10% w/w of AC in a mucoadhesive gel (AG) reduced erythema and sizes of oral wounds after topical applications at higher extent than its placebo gel. Acute orthodontic wounds in 68 volunteers were randomly assigned to topically receive either AG or placebo gel and double-blind assessed...
May 2018: Therapeutic Delivery
https://www.readbyqxmd.com/read/29679503/prosthetic-rehabilitation-of-patients-with-hypohidrotic-ectodermal-dysplasia-a-systematic-review
#8
REVIEW
Dagmar Schnabl, Ingrid Grunert, Matthias Schmuth, Ines Kapferer-Seebacher
BACKGROUND: Hypohidrotic ectodermal dysplasia (HED) comprises a large group of inherited disorders of ectodermal structures, characterized by hypo-/anhidrosis, hypotrichosis and hypo-/oligo-/anodontia. OBJECTIVE: We aimed to systematically assess the spectrum of prosthodontic approaches with regard to the patients' age and to provide clinical implications for practicing dentists. METHODS: An electronic and manual search was conducted in four databases (Medline, LIVIVO, Cochrane Library, Web of Science Core Collection)...
April 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29679496/detection-of-bone-marrow-derived-fibrocytes-in-human-dental-pulp-repair
#9
N Yoshiba, N Edanami, A Tohma, R Takeuchi, N Ohkura, A Hosoya, Y Noiri, H Nakamura, K Yoshiba
AIM: To explore the expression profile of CD45+/pro-collagen I+ fibrocytes in intact dental pulps as well as during wound healing in adult dental pulp tissue. METHODOLOGY: A total of 16 healthy permanent teeth were obtained from young patients (18 to 25 years) undergoing orthodontic treatment. Routine pulp capping with mineral trioxide aggregate (MTA) was performed under local anaesthesia to induce a mineralized barrier at the exposed surface. Teeth were extracted from patients after 7, 14, and 35 days...
April 21, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29676257/-periodontal-optimization-of-the-smile-choosing-the-right-moment-to-achieve-a-maximum-esthetic-result
#10
Muriel Dumay, Jean-Marc Dersot, Brenda Mertens
INTRODUCTION: Today, esthetic enhancement is one of the main reasons why patients seek orthodontic treatment. Governed by the canons of beauty dictated by our society, the smile is a key component in this quest for perfect beauty. Hence, the orthodontist is often the first specialist to be consulted by adolescents, but also, more and more, by adults as well. Using simple tools, the practitioner must be able to make a precise analysis of the patient combining both orthodontic and periodontal examinations with an esthetic periodontal diagnosis...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29676256/-the-smile-a-challenge-in-the-treatment-of-class-iii
#11
Laure De Launay, Sarah Gebeile-Chauty
INTRODUCTION: The smile poses a challenge in the treatment of class III. Untreated, the class III patient presents excessive maxillary torque and a predominant display of the mandibular incisors, a sign that becomes more visible with age. Functional orthopedics restores the aesthetic appearance of the smile by maxillary protraction (sometimes temporarily because 20% of cases will still need surgery). Depending on the initial severity of the case (-4.5 mm AoBo would be the threshold value), the options are compensation or surgical correction...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29676255/-perfecting-smile-esthetics-keep-it-pink
#12
Virginie Monnet-Corti, Angeline Antezack, Marion Pignoly
INTRODUCTION: Smile aesthetics is based on numerical, physical, physiological and psychological data regarding beauty, while taking into account the desires of the patient. It is determined by the shape, colour and position of the lips, teeth and gingival tissues. Periodontal examination in both the facial and labial settings supports analysis of the gingival display during natural and forced smiling, the health of the periodontium, the gingival contours, the aesthetic gingival line, and the presence of the papillae...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29676254/-the-smile-and-dento-facial-orthopaedics
#13
Pierre Canal, Catherine Galletti
INTRODUCTION: The mouth is an essential feature of the human body since it is there that the breath and food of life pass. In addition, it bears witness to our emotions. Today, the smile has become a major means of communication and of "self-affirmation". OBJECTIVE: The first task of the orthodontist is to restore correct function while, obviously, also contributing to enhance the patient's appearance. MATERIALS AND METHODS: In this article, we will present six cases to demonstrate that the leading mission of orthodontics is to restore the occlusion and function...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29676253/-targeting-the-smile-why-don-t-we-aim-at-the-lips
#14
Christine Muller, Ons Alouini, Monique Chouvin
INTRODUCTION: The smile is more than a question of well-aligned teeth. Harmonization of the dentition with the soft tissues is the key to a beautiful smile. This abundantly illustrated article looks more closely therefore at the lips and their movements. MATERIALS AND METHODS: The article begins by explicating the terminology relevant to the lips, then addresses the notions of volume, mobility and aging, and concludes by examining the orthodontic clinical dimension...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29676252/-completely-customized-lingual-orthodontics-to-correct-class-ii-malocclusion-in-adolescents
#15
Ons Alouini, Dirk Wiechmann
INTRODUCTION: Completely-customized lingual orthodontics is an efficient, predictable and esthetic solution for our patients. Adolescents showing a class II malocclusion represent the majority of patients in orthodontic practices. Several modes of treatment are available to correct this sagittal discrepancy such as inter-maxillary elastics, flexible or rigid protrusion devices, maxillary distalization using mini-screws or symmetric and asymmetric extractions. The choice depends on several decision criteria such as the severity of the malocclusion, the symmetry of the class II discrepancy as well as the age and the motivation of the patient...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29671936/influence-of-human-parathyroid-hormone-during-orthodontic-tooth-movement-and-relapse-in-the-osteoporotic-rat-model-a-preliminary-study
#16
H S Lee, H A Heo, S H Park, W Lee, S W Pyo
OBJECTIVE: To investigate the effects of parathyroid hormone (PTH) on tooth movement in ovariectomized (OVX) rats by comparing the tooth movement distance and relapse and by examining the alveolar bone microstructure. MATERIALS AND METHODS: Thirty 8-week-old female rats were classified into 3 groups: sham-operated, OVX and ovariectomized rats injected with PTH (PTH). Eight weeks later, a closed-coil spring appliance was placed between the maxillary incisor and the first molar and then activated with 50 cN of force...
April 19, 2018: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/29671153/novel-method-for-superposing-3d-digital-models-for-monitoring-orthodontic-tooth-movement
#17
Falko Schmidt, Fatih Kilic, Neltje Emma Piro, Martin Eberhard Geiger, Bernd Georg Lapatki
Quantitative three-dimensional analysis of orthodontic tooth movement (OTM) is possible by superposition of digital jaw models made at different times during treatment. Conventional methods rely on surface alignment at palatal soft-tissue areas, which is applicable to the maxilla only. We introduce two novel numerical methods applicable to both maxilla and mandible. The OTM from the initial phase of multi-bracket appliance treatment of ten pairs of maxillary models were evaluated and compared with four conventional methods...
April 18, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29670711/torque-control-during-intrusion-on-upper-central-incisor-in-labial-and-lingual-bracket-system-a-3d-finite-element-study
#18
Tejas R Pol, Meghna Vandekar, Anuradha Patil, Sanjana Desai, Vikram Shetty, Saptarshi Hazarika
Background: The aim of present study was to investigate the difference of torque control during intrusive force on upper central incisors with normal, under and high torque in lingual and labial orthodontic systems through 3D finite element analysis. Material and Methods: Six 3D models of an upper right central incisor with different torque were designed in Solid Works 2006. Software ANSYS Version 16.0 was used to evaluate intrusive force on upper central incisor model ...
January 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29669345/does-the-duration-of-fixed-orthodontic-treatment-affect-caries-activity-among-adolescents-and-young-adults
#19
Alice S Pinto, Luana Severo Alves, Marisa Maltz, Cristiano Susin, Julio Eduardo A Zenkner
This cross-sectional study assessed the relationship between fixed orthodontic treatment duration and caries activity. Two hundred and sixty 10- to 30-year-olds were divided into 4 groups (n = 65): no fixed orthodontic appliances (G0), orthodontic treatment for 1 year (G1), 2 years (G2), or 3 years (G3). Orthodontic treatment duration was significantly associated with active caries: prevalence was 1.5% for G0, 27.7% for G1, and 72.3% for G2 and G3; the median number of lesions was 0 for G0 and G1 and 2 for G2 and G3...
April 17, 2018: Caries Research
https://www.readbyqxmd.com/read/29668455/lateral-cephalometric-study-in-adult-bulgarians-with-normal-occlusion
#20
Katya G Todorova-Plachiyska, Mariya G Stoilova-Todorova
Orthodontic treatment is effective when the facial and cephalometric characteristics of the ethnic background of patients are considered because the normal measurements for one group are not necessarily normal for another group. It is important to develop individual standards for each population. Different racial groups must be treated according to their own characteristics. The aim of this study was to establish a cephalometric standard of the cranial bases and jaw bases for Bulgarian population and to find the differences between males and females...
March 1, 2018: Folia Medica
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