scholarly journals Functional and Esthetic Rehabilitation with In-Ceram Alumina and Zirconia System: A Multidisciplinary Approach

2011 ◽  
Vol 12 (1) ◽  
pp. 68-72 ◽  
Author(s):  
Adriana Cristina Zavanelli ◽  
José Vitor Quinelli Mazaro ◽  
Sandra Rahal Mestrener ◽  
Recardo Alexandre Zavanelli
Keyword(s):  
Multidisciplinary Approach ◽  
Color Change ◽  
Gingival Tissue ◽  
System A ◽  
Dental Esthetics ◽  
Anterior Teeth ◽  
All Ceramic ◽  
Natural Dentition ◽  
Periodontal Plastic Surgery ◽  
Single Crowns

ABSTRACT The development of all-ceramic systems following metalceramics restorations allowed simulation of natural dentition due to favorable esthetics and resistance. In-Ceram is an alternative when esthetics is primordial as well as resistance required in rehabilitation. However, an ideal smile is associated to not only shape, color, texture and translucency but also harmony with gingival tissue. So, the aim of this study is to report a clinical case based on periodontal and fixed partial dentures principles to perform periodontal plastic surgery followed by esthetic rehabilitation. A female patient, 40-year-old, presented complaint about dental esthetics. After clinical and radiographic exams, metal-ceramics crowns (teeth 11, 12, 13, 21, 22 and 23) were considered unsatisfactory due to marginal leakage, color change in gingival tissue associated to metallic margin, and gummy smile. So, a crown lengthening surgery of anterior teeth was performed followed by rehabilitation of superior teeth with In- Ceram single crowns. Clinical significance The interaction between periodontics and fixed prosthodontic area is the key of an adequated treatment planning which involves gingival smile to provide function and an esthetic condition in association with an esthetic, resistant and predictable material. How to cite this article Zavanelli AC, Mazaro JVQ, Mestrener SR, Zavanelli RA. Functional and Esthetic Rehabilitation with In-Ceram Alumina and Zirconia System: A Multidisciplinary Approach. J Contemp Dent Pract 2011;12(1):68-72.

scholarly journals Aesthetic rehabilitation in a patient with skeletal mandibular deficiency and open bite: journey from splinted metalloceramic prosthesis to all-ceramic crowns

2020 ◽  
pp. 1-14
Author(s):  
Rizwan Nazeer ◽  
Shizrah Jamal ◽  
Farhan Raza Khan
Keyword(s):  
Multidisciplinary Approach ◽  
Treatment Plan ◽  
Open Bite ◽  
Anterior Teeth ◽  
All Ceramic ◽  
Abutment Teeth ◽  
Ceramic Crowns ◽  
Crown Lengthening ◽  
Periodontal Healing ◽  
Endodontic Retreatment

Abstract This case report is of a 31-year-old female who presented with splinted and faulty metalloceramic prosthesis on maxillary anterior teeth, which was responsible for localised periodontal disease and poor aesthetics. At multiple sites the ceramic had chipped off and the prosthesis colour did not match with the adjacent healthy teeth. A multidisciplinary approach of endodontics, periodontics and prosthodontics was employed for this case. The treatment plan consisted of removing the faulty prosthesis, endodontic retreatment of inadequately root-treated teeth and endodontics in the other coronally prepared abutment teeth. Crown lengthening surgery was performed for the correction of periodontal pockets and high smile line and maintenance of an adequate biological width. After periodontal healing, all-ceramic individual crowns were placed on the maxillary anterior teeth along with a three-unit all-ceramic bridge for the replacement of the left upper maxillary first premolar. Continuous...  

scholarly journals Aesthetic Rehabilitation in Teeth with Wear from Bruxism and Acid Erosion

2018 ◽  
Vol 12 (1) ◽  
pp. 486-493
Author(s):  
Pamella Tomazi Godoy de Oliveira ◽  
Deise Caren Somacal ◽  
Luiz Henrique Burnett Júnior ◽  
Ana Maria Spohr
Keyword(s):  
Joint Pain ◽  
Multidisciplinary Approach ◽  
Treatment Plan ◽  
Dental Erosion ◽  
Gingival Tissue ◽  
Clinical Report ◽  
Functional Disorder ◽  
Time Intervals ◽  
Anterior Teeth ◽  
Ceramic Restorations

Background:Bruxism is defined as a repetitive activity of grinding the teeth through lateral or protrusive movements of the mandible, and it is considered the most complex and destructive functional disorder. In addition, erosion caused by diet or reflux can damage the remaining teeth.Objective:In this report, a patient with bruxism and dental erosion was treated with a multidisciplinary approach to restore the function and aesthetic.Methods:This clinical report describes the management of an adult woman, 33 years old, who was dissatisfied with the aesthetics of her smile and complained of joint pain and headaches. As result of her condition, the patient’s dentition exhibited generalized wear on the vestibular and incisal surface of the upper incisors incompatible with her age, moderate darkening of the teeth and excess gingival tissue in the upper incisors. After a detailed anamnesis and clinical examination, a diagnosis of bruxism and acid erosion caused by a diet rich in citrus foods and beverages was obtained. Forthwith, a treatment plan was established, and the patient underwent home bleaching, gingivoplasty and ceramic laminates of lithium disilicate on the anterior teeth. After the rehabilitation was completed, a night guard was made to reduce the symptoms of bruxism and avoid fracture of the ceramic restorations. The patient was followed at different time intervals.Conclusion:The improvement in the aesthetics of the teeth was significant and remained stable after periodic controls in which no adverse effects were observed.

scholarly journals Periodontal approach of impacted and retained maxillary anterior teeth

2018 ◽  
Vol 21 (2) ◽  
pp. 204
Author(s):  
N. Henner ◽  
M. Pignoly ◽  
A. Antezack ◽  
V. Monnet-Corti
Keyword(s):  
Multidisciplinary Approach ◽  
Surgical Techniques ◽  
Radiographic Examination ◽  
Orthodontic Anchorage ◽  
Periodontal Health ◽  
Anterior Teeth ◽  
Appropriate Treatment ◽  
Close Cooperation ◽  
Periodontal Plastic Surgery

Treatment of the impacted and retained teeth is a multidisciplinary approach involving close cooperation between periodontist and orthodontist. Clinical and radiographic examination leading subsequently to diagnosis, remain the most important prerequisites permitting appropriate treatment. Several surgical techniques are available to uncover impacted/retained tooth according to their position within the osseous and dental environment. Moreover, to access to the tooth and to bond an orthodontic anchorage, the surgical techniques used during the surgical exposure must preserve the periodontium integrity. These surgical techniques are based on tissue manipulations derived from periodontal plastic surgery, permitting to establish and maintain long-term periodontal health.

scholarly journals Proporção áurea na reabilitação de múltiplos diastemas com laminados vitrocerâmicos reforçados com dissilicato de lítio

2020 ◽  
Vol 8 (10) ◽  
Author(s):  
Paula Mayumi Siqueira ◽  
Fábio Eduardo de Siqueira ◽  
Edson Suguiama ◽  
Gabriel Marcondes Castanheira ◽  
Fernanda Midori Tsuzuki ◽  
...  
Keyword(s):  
Case Report ◽  
Sao Paulo ◽  
Resin Cement ◽  
São Paulo ◽  
Dental Esthetics ◽  
Anterior Teeth ◽  
All Ceramic ◽  
Dent Assoc ◽  
Ceramic Restorations ◽  
Laminate Veneers

Introdução: O restabelecimento de um sorriso harmônico constitui um grande desafio para a odontologia restauradora. A sincronia entre diversas especialidades se faz necessária para diagnosticar e tratar alterações estéticas, buscando a excelência do resultado e a satisfação do paciente. Um método bastante citado na literatura e aplicado por muitos clínicos é baseado na teoria da regra de proporção áurea. Quando adotada para situações complexas a proporção áurea pode ser um ponto de referência para a reabilitação. Deste modo, o trabalho tem como objetivo demonstrar uma reabilitação estética de diastemas múltiplos após tratamento ortodôntico, por meio de laminados vitrocerâmicos reforçados com dissilicato de lítio, onde o conceito de proporção áurea é aplicado. Descrição do caso clínico: Primeiramente, o plano de tratamento consistiu na distribuição uniforme dos diastemas, sendo posicionados da maneira mais harmônica e favorável para a oclusão na reabilitação com laminados vitrocerâmicos. A segunda fase consistiu na cimentação dos laminados, a fim de obter um resultado estético agradável. Discussão: A associação de ortodontia prévia a instalação dos laminados, permite uma melhor harmonia estética e oclusal, garantindo uma longevidade do tratamento. Opções restauradoras como laminados vitrocerâmicos reforçados com dissilicato de lítio permitem reabilitações extensas minimamente invasivas. Para casos complexos a proporção áurea, quando alinhada com os conceitos de macro e microestética, pode levar ao sucesso estético.Descritores: Estética Dentária; Facetas Dentárias; Diastema.ReferênciasSoares GP, Silva FAP, Lima DANL, Paulillo LAMS, Lovadino JR. Prevalência da proporção áurea em indivíduos adultos-jovens. Rev odonto ciênc. 2006;21:346-50.Higashi C, Amaral RC, Hilgenberg SP, Gomes JC, Hirata R, Loguercio R, et al. Finalização estética em dentes anteriores pós tratamento ortodôntico: relato de caso clínico. Int J Bras Dent. 2007;3:388-98.Kalia A, Mirdehghan N, Khandekar S, Patil W. Multi-disciplinary approach for enhancing orthodontic esthetics - case report. Clin Cosmet Investig Dent. 2015;13:83-9.Otani T, Raigrodski AJ, Mancl L, Kanuma I, Rosen J. In vitro evaluation of accuracy and precision of automated robotic tooth preparation system for porcelain laminate veneers. J Prosthet Dent. 2015;114:229-35.BaratierI LN. Estética: restaurações adesivas diretas em dentes anteriores fraturados. São Paulo: Santos Editora; 1998.Levin, EI. Dental esthetics and the golden proportion. J Prosthet Dent. 1978;3:244-52.Siqueira PM, Nahsan FPS, Naufel FS, Formighieri LA, Schmitt VL. Incidência da proporção áurea regressiva após tratamento ortodôntico. Rev Odontol Bras Central. 2012;21:515-18.Melo GFB, Menezes Filho PFM. Proporção áurea e sua relevância para a odontologia estética. Int J Dent. 2008;7:234-238.Oliveira VLR. Estudo da proporção áurea entre incisivos centrais. SOTAU R. Virtual Odontol. 2008;5:2-6.Proffit W, Fields HW, Sarver DM. Contemporary orthodontics Fourth edition. Oxford: Elsevier Health Sciences; 2006.Moon JE. Esthetic restorations of maxillary anterior teeth with orthodontic treatment and porcelain laminate veneers: a case report. J Adv Prosthodont. 2010;2:61-63.Keene HJ. Distribution of diastemas in the dentition of man. Am J Phys Anthropol. 1963;21:437-41.Nagalakshmi S, Sathish R, Priya K, Dhayanithi D. Changes in quality of life during orthodontic correction of midline diastema. J Pharm Bioallied Sci. 2014;6:162-64.Jacobson N, Frank CA. The myth of instant orthodontics: an ethical quandary. J Am Dent Assoc. 2008;139:224-34.Bona AD. Bonding to ceramics: scientific evidences for clinical dentistry. São Paulo: Artes Médicas; 2009. p. 91-132.Griggs JA. Recent advances in materials for all-ceramic restorations. Dent Clin North Am. 2007;51:713-27.Gurel G, Sesma N, Calamita MA, Coachman C, Morimoto S. Influence of enamel preservation on failure rates of porcelain laminate veneers. Int J Periodontics Restorative Dent 2013;33:31-9.Vargas MA, Bergeron C, Diaz-Arnold A. Cementing all-ceramic restorations: recommendations for success. J Am Dent Assoc. 2011;142:20-24.Runnacles P, Correr GM, Baratto Filho F, Gonzaga CC, Furuse AY. Degree of conversion of a resin cement light-cured through ceramic veneers of different thicknesses and types. Braz Dent J. 2014; 25:38-42.Almeida JR, Schmitt GU, Kaizer MR, Boscato N, Moraes RR. Resin-based luting agents and color stability of bonded ceramic veneers. J Prosthet Dent. 2015;114:272-77.Marubayashi AMW, Shinike, AY, Terada, HH, Kurihara, E, Terada RSS. Avaliação da proporção áurea em pacientes submetidos ou não a tratamento ortodôntico. Rev Dental Press Estét. 2010;7:72-80.Morley J1, Eubank J. Macroesthetic elements of smile design. J Am Dent Assoc. 2001;132:39-45.Johnston CD, Burden DJ, Stevenson MR. The influence of dental to facial midline discrepancies on dental attractiveness ratings. Eur J Orthod. 1999;21:517-22.Kokich VO Jr, Kiyak HA, Shapiro PA. Comparing the perception of dentists and lay people to altered dental esthetics. J Esthet Dent. 1999;11:311-24.

scholarly journals Multidisciplinary esthetic approach for multiple anterior diastema: 36-month clinical performance

2015 ◽  
Vol 18 (4) ◽  
pp. 111
Author(s):  
Karin Cristina da Silva Modena ◽  
Bella Luna Colombini-Ishikiriama ◽  
Sergio Kiyoshi Ishikiriama ◽  
Cassiana Koch Scotti ◽  
Flavia Pardo Salata Nahsan
Keyword(s):  
Treatment Planning ◽  
Multidisciplinary Approach ◽  
Clinical Performance ◽  
Gingival Tissue ◽  
Advanced Treatment ◽  
Tooth Color ◽  
Anterior Teeth ◽  
Appropriate Treatment ◽  
Minimum Wear

<p>The presence of diastema, between anterior teeth, distorts a pleasing smile by concentrating the observer’s attention on the spaces. The patient’s needs and expectations must be considered in the process of treatment planning to ensure satisfaction with the treatment outcomes. There are many forms of therapy that can be used for diastema closure. A carefully developed diagnosis, which includes a determination of the causal elements and advanced treatment planning, allows the most appropriate treatment to be selected for each case. The aim of this paper is present a multidisciplinary approach as a solution to multiple diastemas in the anterior region using gingival tissue recontouring and direct adhesive restorations, with minimum wear of the dental structure, after the orthodontic intervention discussing the minimal intervention to obtain imperceptive and aesthetic final restoration. Thirty-six months after the treatment was carried out, the final aesthetic was maintained with all dental element details and gingival tissue harmony, without recurrence of periodontal pockets and the preservation of the tooth color and shape. </p>

Formation of the nitrogen-fixing enzyme system in Azotobacter vinelandii

1968 ◽  
Vol 14 (1) ◽  
pp. 25-31 ◽  
Author(s):  
G. W. Strandberg ◽  
P. W. Wilson
Keyword(s):  
Color Change ◽  
Azotobacter Vinelandii ◽  
Nitrogenase Activity ◽  
Color Difference ◽  
Potassium Nitrate ◽  
Whole Cells ◽  
System A ◽  
Growth System ◽  
A Cell ◽  
Enzyme Formation

The formation and activity of nitrogenase2 in Azotobacter vinelandii OP was examined using a cell-free assay system. A lag period of about 30 min occurred between the exhaustion of the combined nitrogen source and growth on N2. Cells grown on ammonium acetate or potassium nitrate had no detectable nitrogenase activity. Nitrogenase activity appeared in cells, grown under a flowing gas phase of 20% O2 – 60% He, about 45 min after the exhaustion of ammonia. Nitrogenase formation was inhibited in a closed system with an atmosphere containing 40% O2 but not by one containing 20% O2. Hydrogen did not inhibit enzyme formation. The question of whether N2 is required for the formation of the enzyme could not be answered as this gas could not be completely eliminated from the growth system. Chloramphenicol prevented the formation of the enzyme and inhibited nitrogen fixation in whole cells, but had no effect on cell-free enzyme activity. A brief rise in turbidity which occurred during nitrogenase formation appeared to be due to a color change in the cells from reddish brown to dark brown. Spectrophotometric examination of extracts from ammonia- and N2-grown cells did not reveal any components responsible for this color difference, but this result may reflect only the presence of interfering substances in the crude extract.

scholarly journals All-ceramic single crowns supported by zirconia implants- 5-year results of a prospective multicenter study

2018 ◽  
Vol 29 ◽  
pp. 86-86
Author(s):  
Benedikt C. Spies ◽  
Marc Balmer ◽  
Ronald E. Jung ◽  
Irena Sailer ◽  
Kirstin Vach ◽  
...  
Keyword(s):  
Multicenter Study ◽  
Prospective Multicenter Study ◽  
All Ceramic ◽  
Single Crowns ◽  
Zirconia Implants

scholarly journals Spontaneous Migration of a Ventriculoperitoneal Shunt into the Venous System: A Multidisciplinary Approach

Cureus ◽  
2020 ◽  
Author(s):  
Megan M Finneran ◽  
Emilio Nardone ◽  
Dario A Marotta ◽  
Glen B Smith ◽  
Ajeet Gordhan
Keyword(s):  
Ventriculoperitoneal Shunt ◽  
Multidisciplinary Approach ◽  
Venous System ◽  
System A ◽  
Spontaneous Migration

scholarly journals Management Of Mandibular Lateral Incisor Agenesis With Skeletal Class III Malocclusion by Space Closing Technique

2018 ◽  
Vol 1 (2) ◽  
pp. 93
Author(s):  
Fidiyah Inayati ◽  
I Gusti Aju Wahju Ardani
Keyword(s):  
Lateral Incisor ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Anterior Crowding ◽  
Skeletal Class ◽  
Dental Esthetics ◽  
Skeletal Malocclusion ◽  
Anterior Teeth ◽  
Space Closure ◽  
Closure Method

Background: Patients with congenital absence of a mandibular lateral incisor are often found having difficulty in achieving adequate functional occlusion. It may affect esthetics, mastication, speech, and occlusal balance. Purpose: This paper reported an agenesis treatment of one mandibular lateral incisor case using a space closure method. Case: A twenty-three years old female patient with agenesis of tooth 42, mandibular anterior crowding, multiple diastema on mandibular anterior teeth, and skeletal class III malocclusion. Case Management: Space closure method was chosen to correct the agenesis by considering the class III skeletal malocclusion and multiple diastema condition. Conclusion: Space closure method treatment improved the patient’s facial and dental esthetics, and it provided a good functional occlusion, despite the absence of a mandibular lateral incisor, which generally impairs the adequate incisal guidance.

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