Comparison of Self-Perception of Esthetics and Orthodontic Treatment Needs among Dental and Non-Dental Students with Assessment by Orthodontist

Objectives: The present study was conducted to compare the self-perception of esthetics and wish for seeking orthodontic treatment among dental and non-dental students. The realistic orthodontic treatment needs were confirmed by expert orthodontist. Methods: A cross-sectional study was conducted among 255 male students (Dental—75, Medical—93 and Pharmacy—87 students). The questionnaire included 20 items covering dental esthetics self-perception (10 questions), self-confidence and psychological impact (5 questions), and the need for seeking orthodontic treatment (5 questions) on a five-point Likert scale. The realistic orthodontic treatment needs were confirmed by photographs using aesthetic component of IOTN and clinical examination for the participants and analysis of jaw models using Dental aesthetic index (DAI). Kruskal-Wallis ANOVA was used to check the significant difference between groups. Results: The overall average esthetic self-perception score for total sample was 3.83. The overall average psychological impact score for the whole sample was 2.67. The total percentage of participants who either agree or strongly agree with the question related to their perception of need for seeking orthodontic treatment was 70%. According to the assessment of orthodontic needs using AC-IOTN, 19.8% required definitive treatment. According to the assessment of orthodontic treatment needs based on DAI, 20.3% and 9.9% needed highly desirable (DAI 31 - 35) and definite need of treatment (DAI ≥ 36) respectively. Conclusion: It can be concluded that there was no difference between the esthetic perception of dental and non-dental students. The self-perception for seeking orthodontic treatment was over-reported by participants compared to real requirement as assessed by orthodontic specialist. Dental esthetics has no psychological impact on academic performance and self-confidence as perceived by study participants.

Transforming Adolescent Smiles:Correcting Skeletal Mandibular Retrusion and Bimaxillary Protrusion with Clear Aligners

Maxillary protrusion combined with mandibular retraction is a highly prevalent but extremely complex maxillofacial deformity that can have a serious negative impact on patients’facial aesthetics and mental health.The traditional orthodontic treatment strategy often involves extracting 4 first premolars and conventional fixed techniques,combined with mini-implant screws,to retract the anterior teeth and improve facial protrusion.In recent years,an invisible orthodontic technique,without brackets,has become increasingly popular.However,while an invisible aligner has been used in some cases with reasonable results,there remain significant challenges in achieving a perfect outcome.This case report presents an adolescent patient with bimaxillary protrusion and mandibular retrognathia.Based on the characteristics of the invisible aligners and the growth characteristics of the adolescent’s teeth and jawbone,we designed precise three-dimensional tooth movement and corresponding resistance/over-correction for each tooth,while utilizing the patient’s jawbone growth potential to promote rapid development of the mandible,accurately and efficiently correcting bimaxillary protrusion and skeletal mandibular retrognathia.The patient’s facial aesthetics,especially the lateral morphology,have been greatly improved,and various aesthetic indicators have also shown significant changes,and to the patient’s great benefit,invasive mini-implant screws were not used during the treatment.This case highlights the advantages of using invisible aligners in adolescent maxillary protrusion combined with mandibular retraction patients.Furthermore,comprehensive and accurate design combined with good application of growth potential can also enable invisible orthodontic technology to achieve perfect treatment effects in tooth extractions,providing clinical guidance for orthodontists.

Guo Moruo’s Early Esthetics and Western Romanticism

is an initial study of the influence of Western romanti- cism on Guo Moruo’s early esthetic views.Wang and Luo believe that Guo Moruo atthat time from his philosophical perspective on to his literary and artistic opinionswas under the influence of the romantic ideas of such Western poets as Shelley,Goethe,Whitman,Wordsworth and Coleridge,and these laid the foundation for hisearly esthetic views.The literary and artistic theories of such estheticians of thelate nineteenth and early twentieth century as Croce,Bergson,Nietzsche,Freud,Paterand Oscar Wilde as well as Western symbolists and expressionists also had some im-pact on Guo Moruo’s early views.However,since Guo Moruo assimilated theirtheories from his own romantic esthetic perspective,even though their influence addedsome different factors to his early esthetic views,they did not effect any qualitativechange in them.

The Aesthetic Inheritance of the Mao Dun Literature Prize in the Flux-Take Xu Mao and His Daughters and A Tale of the Wind as Examples

The Mao Dun Literature Prize is one of the well-known literary awards in China,and in the process of selection over the years,the Mao Dun Literature Prize has developed its own aesthetic orientation.A comparison is made between the early generation of Xu Mao and His Daughters and the recent award-winning work,A Tale of the Wind,to discover the aesthetic heritage in its flux,which is enlightening for the literary criticism and an orientation for the literary creators.

现象学视域中的音乐本体意义解读(下)

三、音乐本体意义的现象学视域分析在现象学的视域中分析音乐的本质最终要借助于音乐作品来进行。首先要以胡塞尔现象学中的"本质还原"理论为依据,通过"直观"概念中认知这一方式,去感知、想象、判断音乐中的语言思维和形式逻辑的构建,也就是音乐作品中包含的形式和内容,同时排除音乐中其它非音乐的成分,从而对音乐作品的本质加以把握。那么。

爱克丝(Esthet.X)微基质填料光固化复合树脂的临床评价

目的 :本研究是评价Esthet.X微基质修复材料修复恒前牙、恒前磨牙的临床状况。方法 :共修复 4 3位病人 ,1 0 0颗牙。分别在修复后当时、修复后 6个月、修复后 1 2个月依据HB和USPHS改良的方法进行直接临床评价。结果 :在原有病例中 ,只有 87例进行了完整的一年观察。都没有术后反应和牙髓反应。在色泽协调性、表面状况、边缘完整性上 ,R级分别占 94 .2 5 %、95 .4 0 %和 90 .80 %。结论 :Esthet.X有着优良的临床特性和极好的可操作性。加上应用仿真色系 ,使得重塑的修复效果更逼真、更自然 。

延伸皮尔斯:阿赫提-维科·皮塔里宁教授访谈(英文)

简介：阿赫提一维科·皮塔里宁教授是世界知名的皮尔斯哲学学者。他是芬兰赫尔辛基大学符号学教授、皮尔斯研究中心主任,爱沙尼亚塔林科技大学哲学系主任。作为美国皮尔斯学会执行委员会成员,皮塔里宁教授在皮尔斯符号学理论及其相关方面建树颇丰,具体可参见其代表作《逻辑的符号学：皮尔斯的语言哲学、博弈与交流》（2006）。

Cone beam computed tomographic analyses of alveolar bone anatomy at the maxillary anterior region in Chinese adults

To provide an anatomical basis for clinical implant esthetics,we evaluated the morphology of the nasopalatine canal（NPC） and analyzed labial and interproximal bone anatomy at the maxillary anterior region.We sought to investigate the effect of maxillary protrusion and tooth labiolingual inclination on labial bone anatomy in Chinese adults.Three dimensional（3D） images were reconstructed using cone-beam computed tomography（CBCT） images from 80 Chinese subjects and by SimPlant 11.04.The dimensions of the NPC,the thickness and profile of the labial bone,the width and height of the interproximal bone,angle sella-nasion-subspinale（SNA） and angle upper central incisor-nasion,subspinale（U1-NA） were measured.The incisive foramen of the NPC was markedly wider than its nasal foramen.The dimension of its labial bone wall demonstrated an increasing width from the crestal to apical measurements.The labial bone at the maxillary anterior region was rather thin,especially at 3 mm below the cemento-enamel junction（CEJ） and the mid-root level;the profile of the labial bone was more curved at the central incisor,and the interproximal bone became wider and shorter posteriorly.There were significant relationships between maxillary protrusion and labial bone profile,tooth labiolingual inclination and labial bone thickness（P 〈 0.02）.To achieve optimal esthetic outcome of implant,bone augmentation is necessary at the maxillary anterior region.For immediate or early placement at the maxillary anterior region,the implant should be located palatally to reduce labial bone resorption and marginal recession;its apex should be angulated palatally to avoid labial perforation at the apical region.To protect the NPC,implants at the central incisor region should be placed away from NPC.

Facial microcystic adnexal carcinoma-treatment with a “jigsaw puzzle” advancement flap and immediate esthetic reconstruction: A case report

BACKGROUND Microcystic adnexal carcinoma(MAC)is a rare malignant tumor of the skin that is commonly found on the face.It grows slowly and has a low mortality rate.However,for various reasons,including strong histological invasiveness,clinical inexperience and inadequate procedure design,immediate or permanent facial deformity may occur after surgical operations.CASE SUMMARY This article describes a middle-aged female artist who was diagnosed with MAC on the left upper lip.She declined the recommended treatment plan,which included two-stage reconstruction,skin grafting,or surgery that could have resulted in obvious facial dysfunction or esthetic deformity.We accurately designed a personalized procedure involving a“jigsaw puzzle advancement flap”for the patient based on the lesion location and the estimated area of skin loss.The procedure was successful;both pathological R0 resection and immediate and long-term esthetic reconstruction effects were achieved.CONCLUSION This study suggests that when treating facial MAC or other skin malignancies,a surgical team should have sufficient plastic surgery-related knowledge and skills.An optimal surgical plan for an individual is needed to achieve good facial esthetics and functional recovery and shorten the treatment course.

Application of Laser Technology in Fixed Prosthodontics <br/>—A Review of the Literature

Introducing laser light in prosthetic dentistry opens a new era on the treatment modules with new impact in the quality of prosthodontics treatments, with hope of overcoming some of the drawbacks posed by the conventional methods of fixed prosthodontics procedures. Laser techniques cause less pain than traditional methods and eliminate the noise of instrumentals that some fearful patients who have long term neglected care and those have complex medical histories and required more specialized care, could use the advantage of laser in their treatment plan. The aim of the articles review is to highlight the current and emerging application of laser in fixed prosthodontics treatment to be used in conjunction or as replacement for traditional methods based on the research that support the indication described.

Evaluation of the Future of the Patients Operating on a Switching Mandibuletomy in Madagascar

Introduction: Interruptive mandibulectomy is often unavoidable despite the functional postoperative handicaps that it generates. Plate reconstruction is the only possible reconstruction in CHUDR Antananarivo. The objective of this study is to evaluate the oral-facial functional status of patients who have undergone interruptive mandibulectomy. Methods: It is a descriptive and transversal retrospective study of 18 months from January 17, 2017 to July 17, 2018. We retained 30 patients who had undergone an interruptive mandibulectomy in the ward during the study period. We studied the state of mastication, phonation, pain, swallowing, labial continence, psychological state, deformity and satisfaction. Patients were classified into 3 groups according to type of intervention A, B and C. Results: Thirty patients were included. The type C intervention was the most frequent, followed by types B and A. The postoperative follow-up period ranged from 1 to 23 months. Chewing disorder has been encountered in more than half of cases. The phonation disorder was found in groups B and C. We found 13 cases of deformity. Patients became well integrated into society after surgery. Conclusion: Mandibulectomy creates aesthetic and functional prejudices for patients. Despite these disorders, patients adapt well to their daily lives.

Comparative Analysis of Two Methods for the Assessment of Aesthetic Impairment Involving Teeth

Objective: To analyze and compare the effectiveness of two methods designed for the assessment of esthetic impairment in patients with missing teeth. Material and Methods: Two methods were addressed in this study: 7-level scale (7LS) and AIPE-Odonto/Brasil. Both tools are designed to assess esthetic dental impairment in civil and criminal Courts. One-hundred and thirteen dentists used the tools to assess dental esthetic impairment in four mock cases (one male and three females). The outcomes of their analyses were compared with pre-established gold-standard scores. Chi-square test was used to investigate the influence of dentists’ sex, age, time of experience and forensic knowledge with their outcomes. Results: Dentists’ outcomes were closer to the expected gold-standard scores when AIPE-Odonto/Brasil was used compared to 7LS (p < 0.05). Dentists’ sex, time of experience and forensic knowledge were significantly associated with the scores obtained with both tools (p < 0.05). Conclusions: Comparatively, AIPE-Odonto/Brasil was more effective for the assessment of esthetic dental impairment involving missing teeth compared to the 7LS.

爱克丝微基质材料在修复前牙间隙的临床美学效果观察

目的 :评价一种新材料——爱克丝 (Esthet.X)微基质材料修复前牙间隙的临床美学效果。方法 :门诊随机选用Esthet.X微基质材料树脂修复前牙间隙 32例 ;另选用 Spectrum TPH光固化材料修复前牙间隙 32例作为对照 ,评价色泽、美观性、表面状况、边缘的完整性 ,并随访 2年 ,观察充填材料的脱落情况及颜色变化。结果 :Esthet.X微基质材料修复前牙间隙 2年后成功率为 96 .9% ,满意率 75 % ;Spectrum TPH光固化材料成功率为 78.1 % ,满意率 2 1 .9%。Esthet.X微基质材料的成功率 >Spectrum TPH光固化材料。结论 :Esthet.X树脂是一种容易操作、美观、固位优于Spectrum

Optimizationof Design Concept of Construction for Railway Passenger Stations in New Era

The concept of building up a“well-connected fully-integrated,enviomentfriendly,passenger-oriented,economic-efficient,culturally-rich,intelligent and A convenient”station has been being applied to practice in recent years.China State Railway Group Co.Ltd .(hereinafier referred to as CHINA RAILWAY)and the Academyof Arts&Design,Tsinghua University have jointly initiated a series of study projects around the topic of“cultural and artistic expression”aiming to optimize design concepts and explore the design aesthetics of China's railway passenger stations in practice.These projects have achieved some positive results and this paper aims to provide a better analysis of the design concept of railway passenger stations in the new era through ananalysis of those stations' design aesthetic.

Papillae alterations around single-implant restorations in the anterior maxillae:thick versus thin mucosa

To evaluate the papilla alterations around single-implant restorations in the anterior maxillae after crown attachment and to study the influence of soft tissue thickness on the papilla fill alteration. According to the inclusion criteria, 32 patients subjected to implant-supported single-tooth restorations in anterior maxillae were included. The patients were assigned to two groups according to the mucosal thickness： （i） group 1, 1.5 mm≤mucosal thickness≤3 mm; and （ii） group 2, 3 mm〈mucosal thickness≤4.5 mm. Assessments of interproximal papillae at the time of crown placement （baseline） and at 6-month postloading （follow-up） were made by two prosthodontists using papilla fill index （PFI）. The mean mucosal thickness was （2.49±0.31） mm （group 1） and （3.81±0.31） mm （group 2） for the two groups respectively. A significant difference in PFI between the groups was detected at the baseline （P〈O.O01）. PFI improvements over time occurred after 6-month follow-up irrespective of the groups. When compared to group 1, the likelihood to obtain papilla fill was significantly higher for group 2 with an odds ratio of 6.05 （P〈O.O01）. The interproximal papilla level around single-implant restorations could improve significantly over time after 6-month restoration according to PFI assessment. The thicker mucosa before implant placement implied a more favorable esthetic outcome in papilla alteration.

Immediate implant placement in combination with platelet rich-fibrin into extraction sites with periapical infection in the esthetic zone:A case report and review of literature

BACKGROUND In this case,platelet-rich fibrin(PRF)was added to guided tissue regeneration as a biomaterial in proper order for immediate planting in aesthetic area with periapical infection.CASE SUMMARY With the history of endodontic failure in maxillary central incisor,a 34-year-old female patient required the extraction of maxillary anterior residual root and immediate implantation.Cone beam computed tomography and clinical observation were used to assess the regeneration of soft and bone tissue.Before operation,cone beam computed tomography showed the anterior residual root had serious periapical periodontitis with insufficient labial bone in the aesthetic zone.The patient underwent immediate implant placement and reconstruction of the bone substitution by modified guided bone regeneration.The barrier was a three-layer structure of PRF-collagen membrane-PRF that covered the mixture of PRF and Bio-Oss to promote both osteogenesis and soft tissue healing.At 6 mo postoperatively,the definitive crown was placed after accomplished finial impression.One-year follow-up showed a satisfactory aesthetic effect with no obvious absorption of the labial bone and soft tissue.CONCLUSION The use of PRF in combination with guided bone regeneration can serve as a reliable and simple adjuvant for immediate implanting in infected socket and result in a stable osteogenic effect with good aesthetic outcome.

Achieving the Visual Perception and Gestalt Psychology in Sultan Hassan Mosque Building

The gestalt principles are perception and what is visually communicated by objects. These principles describe the visual language within which we work. Understanding how a designer realizes things visually will help designers communicate better. Many designers use Gestalt principles to have a structure visual stimulus, so as to create interfaces that are easy for users to understand. Because the understanding of visual perception is a critical item in any designer’s toolkit. Islamic heritage buildings also contain many architectural values, especially the Sultan Hassan Mosque in Cairo. Through this paper, we will verify the use of gestalt principles of visual perception in the building design. Because the psychological organization of the design, achieves the understanding and awareness of the current relationships between the elements, depending on the extent of regularity, accuracy, and consistency of the design elements. This makes us recognize the esthetic values of Sultan Hassan’s building and mosque. The visual delight we get from architecture begins with how we perceive it. So, in order to understand how visual delight arises, we must first understand how we perceive and interpret visual stimuli. Especially since the principles of gestalt confirm that the human brain tends to make tricks and illusions. Therefore, we found the mosque designer had exploited this fact during the design process, to exclude any possibility of the resulting misunderstanding. The designer achieved the psychological preparation of the visitor by using some principles of visual perception of the Gestalt theory, such as growth, continuity, and hierarchy.

Two bone blocks sandwich technique for horizontal reconstruction of severely atrophic alveolar ridge in anterior maxilla: A case report

BACKGROUND Severe horizontal bone deficiency of the maxillary anterior region is considered a major challenge in reconstruction and successful implant placement.Various approaches have been developed to augment bone volume.Of these approaches,onlay bone graft,alveolar bone splitting,and guided bone regeneration have been suggested.CASE SUMMARY A 22-year-old female patient,with no previous medical history,presented to the Department of Oral Implantology,Wuhan University due to a missing right maxillary incisor.The X-ray results showed severe horizontal bone deficiency,with an available bone width of 3.1-4.0 mm.The two bone blocks sandwich technique was performed to augment the bone volume.After 6 months healing,X-ray results showed that the newly formed alveolar ridge dimension increased to 4.7-9.5 mm horizontally.Implant insertion surgery was performed and allceramic restorations were fabricated.The implant was stable at the 1-year followup visit after restoration,and the X-ray showed a stable bone level around the dental implant.The scores for the pink esthetic score and white esthetic score were 12 and 8,respectively,and the patient was satisfied with the esthetic outcome.CONCLUSION The two bone blocks sandwich technique may be an alternative treatment option in augmenting severe horizontal bone deficiency of the anterior maxilla.

Enamel microabrasion: An overview of clinical and scientific considerations

Superficial stains and irregularities of the enamelare generally what prompt patients to seek dental intervention to improve their smile. These stains or defects may be due to hypoplasia, amelogenesis imperfecta, mineralized white spots, or fluorosis, for which enamel microabrasion is primarily indicated. Enamel microabrasion involves the use of acidic and abrasive agents, such as with 37% phosphoric acid and pumice or 6% hydrochloric acid and silica, applied to the altered enamel surface with mechanical pressure from a rubber cup coupled to a rotatory mandrel of a lowrotation micromotor. If necessary, this treatment can be safely combined with bleaching for better esthetic results. Recent studies show that microabrasion is a conservative treatment when the enamel wear is minimal and clinically imperceptible. The most important factor contributing to the success of enamel microabrasion is the depth of the defect, as deeper, opaque stains, such as those resulting from hypoplasia, cannot be resolved with microabrasion, and require a restorative approach. Surface enamel alterations that result from microabrasion, such as roughness and microhardness, are easily restored by saliva. Clinical studies support the efficacy and longevity of this safe and minimally invasive treatment. The present article presents the clinical and scientific aspects concerning the microabrasion technique, and discusses the indications for and effects of the treatment, including recent works describing microscopic and clinical evaluations.

On Grillet's Short Story “The Secret Room”——in a Phenomenological Reading Approach

In this paper, the authortries to make a tentative analysis on the short story “The Secret Room” by Alain Robbe Grillet, a French novelist and a contemporary world famous experimentalist of “new novel” form, through reading in phenomenological approach so as to appreciate his novel style, realize the readers esthetic imagination, meanwhile, to deepen the understanding of the process of phenomenological reading.