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posterior palatal seal

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https://www.readbyqxmd.com/read/29753777/surgically-assisted-rapid-palatal-expansion-in-class-iii-malocclusion-our-experience
#1
A Barrabé, C Meyer, H Bonomi, Weber Elise, N Sigaux, A Louvrier
INTRODUCTION: Maxillary transverse deficiency (MTD) is a common facial disharmony that may need surgical assisted rapid palatal expansion (SARPE). The aim of this study was to present our SARPE technique and to report about our experience. MATERIEL AND METHOD: Medical records of all class III patients who underwent SARPE in our department from 2010 to 2015 and for whom a follow-up of at least 1 year was available, were included in a retrospective study. The technic consisted, after short orthodontic preparation allowing for divergence of the upper central incisors, in a complete Le Fort I osteotomy without down fracture, and medial sagittal submucosal separation of the hard palate under general anesthesia in an inpatient procedure...
May 10, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29703675/accuracy-and-reproducibility-of-virtual-edentulous-casts-created-by-laboratory-impression-scan-protocols
#2
Lingyan Peng, Li Chen, Bryan T Harris, Bikash Bhandari, Dean Morton, Wei-Shao Lin
STATEMENT OF PROBLEM: Although computer-aided design and computer-aided manufacturing (CAD-CAM) complete removable dental prostheses (CRDPs) have gained popularity, conventional impressions are still common for CAD-CAM CRDP treatment. These need to be digitized and converted into virtual edentulous casts with a laboratory impression scan protocol during prosthesis fabrication. How this can best be accomplished is unclear. PURPOSE: The purpose of this in vitro study was to compare the accuracy and reproducibility of virtual edentulous casts created by a dental laboratory laser scanner and a cone-beam computed tomography (CBCT) scanner with a digitized master cast...
April 24, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29366492/optimization-of-large-mod-restorations-composite-resin-inlays-vs-short-fiber-reinforced-direct-restorations
#3
Luciana Mara Soares, Mehrdad Razaghy, Pascal Magne
OBJECTIVE: To compare mechanical performance and enamel-crack propensity of direct, semi-direct, and CAD/CAM approaches for large MOD composite-resin restorations. METHODS: 45 extracted maxillary molars underwent standardized slot-type preparation (5-mm depth and bucco-palatal width) including immediate dentin sealing (Optibond FL) for the inlays (30 teeth). Short-fiber reinforced composite-resin (EverX Posterior covered by Gradia Direct Posterior) was used for the direct approach, Gradia Direct Posterior for the semi-direct, and Cerasmart composite resin blocks for CAD/CAM inlays...
April 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29148238/use-of-resin-based-provisional-material-to-create-the-posterior-palatal-seal-in-complete-denture-definitive-impressions
#4
Victor Eduardo de Souza Batista, Aljomar José Vechiato-Filho, Eduardo Piza Pellizzer, Fellippo Ramos Verri
The purpose of this article was to present an alternative procedure using resin-based provisional material to create the posterior palatal seal (PPS). This method offers more practicality in clinical routine and increased control for addition of material to create the PPS when compared to traditional techniques such as the use of impression wax.
November 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28823003/anatomical-study-of-the-palatine-aponeurosis-application-to-posterior-palatal-seal-of-the-complete-maxillary-denture
#5
Joe Iwanaga, Junta Kido, Marcin Lipski, Iwona M Tomaszewska, Krzysztof A Tomaszewski, Jerzy A Walocha, Rod J Oskouian, R Shane Tubbs
The palatine aponeurosis is a thin, fibrous lamella comprising the extended tendons of the tensor veli palatini muscles, attached to the posterior border and inferior surface of the palatine bone. In dentistry, the relationship between the "vibrating line" and the border of the hard and soft palate has long been discussed. However, to our knowledge, there has been no discussion of the relationship between the palatine aponeurosis and the vibrating line(s). Twenty sides from ten fresh frozen White cadaveric heads (seven males and three females) whose mean age at death was 79 years) were used in this study...
February 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27550292/slow-versus-rapid-maxillary-expansion-in-bilateral-cleft-lip-and-palate-a-cbct-randomized-clinical-trial
#6
Araci Malagodi de Almeida, Terumi Okada Ozawa, Arthur César de Medeiros Alves, Guilherme Janson, José Roberto Pereira Lauris, Marilia Sayako Yatabe Ioshida, Daniela Gamba Garib
OBJECTIVES: The purpose of this "two-arm parallel" trial was to compare the orthopedic, dental, and alveolar bone plate changes of slow (SME) and rapid (RME) maxillary expansions in patients with complete bilateral cleft lip and palate (BCLP). MATERIAL AND METHODS: Forty-six patients with BCLP and maxillary arch constriction in the late mixed dentition were randomly and equally allocated into two groups. Computer-generated randomization was used. Allocation was concealed with sequentially, numbered, sealed, opaque envelopes...
June 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27408462/high-palatoglossal-arch-a-new-indication-for-pre-prosthetic-surgery
#7
Kanchan R Raikwar, Monali Ghodke, Janardan B Garde, Rajendrakumar Suryavanshi
Pre-prosthetic surgery helps to overcome the challenge of prosthetic rehabilitation of the patient including restoration of the best masticatory function possible, combined with restoration or improvement of dental and facial esthetics. Maxillary denture prosthesis fabrication should include thorough examination of the soft palate and palatoglossal arch anatomy. This case report emphasizes on high palatoglossal arch as a rare and new cause of loss of posterior palatal seal and thereby retention of maxillary denture with rational, treated by pre-prosthetic surgery, ever reported in literature...
July 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27141165/a-study-of-correlation-between-posterior-palatal-seal-width-and-soft-palatal-angulation-with-palatal-contour
#8
Rupal J Shah, Sanjay B Lagdive, Divyeshkumar B Modi, Bhavyata Darji, Vedanshi A Amin, Ghanshyambhai C Patel
CONTEXT: The spatial relationship of posterior palatal seal (PPS) width and vibrating lines varies among individuals. Such variability could be related to contour of the palate. AIMS: The study was carried out to evaluate the relationship between PPS width of the patient intra-orally and cephalometric tracing of the same patient. Second part of the study was formulated to determine whether the anterior and posterior vibrating lines can be distinguished as two separate lines by different observers...
April 2016: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/27112416/comparison-of-denture-base-adaptation-between-cad-cam-and-conventional-fabrication-techniques
#9
COMPARATIVE STUDY
Brian J Goodacre, Charles J Goodacre, Nadim Z Baba, Mathew T Kattadiyil
STATEMENT OF PROBLEM: Currently no data comparing the denture base adaptation of CAD-CAM and conventional denture processing techniques have been reported. PURPOSE: The purpose of this in vitro study was to compare the denture base adaptation of pack and press, pour, injection, and CAD-CAM techniques for fabricating dentures to determine which process produces the most accurate and reproducible adaptation. MATERIAL AND METHODS: A definitive cast was duplicated to create 40 gypsum casts that were laser scanned before any fabrication procedures were initiated...
August 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/26199512/prosthetic-rehabilitation-of-a-congenital-soft-palate-defect
#10
Kurien Varghese
Obturator is derived from the Latin verb obturate which means to close or to shut off. This definition provides an appropriate description of the objective of obturation in patients with palatal defects. The obturator is often helpful in improving the speech of individuals with partial or total velar defects i.e. cleft of soft palate. Soft palate cleft is one of the most common cause of velopharyngeal incompetence, which is the functional inability of the soft palate to effectively seal with the posterior and or lateral pharyngeal walls...
December 2014: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/25743606/nasendoscopic-evaluation-of-stress-velopharyngeal-insufficiency-in-wind-musicians-a-pilot-study
#11
Alison Evans, Tim Driscoll, Jonathan Livesey, David Fitzsimons, Bronwen Ackermann
OBJECTIVE: To investigate the anatomy and function of the velopharyngeal mechanism in musicians who experience symptoms of stress velopharyngeal insufficiency (VPI) compared to musicians who do not. METHODS: The velopharyngeal mechanism of 13 musicians, 8 with reported symptoms of stress VPI and 5 without, were evaluated using video nasendoscopy before and after 30 minutes of playing. All nasendoscopic recordings were rated by an external speech-language pathologist and ear, nose and throat surgeon for maintenance of velopharyngeal closure, type of velopharyngeal closure pattern, and velopharyngeal gap...
March 2015: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/25473314/a-comparative-study-of-retention-of-complete-denture-base-with-different-types-of-posterior-palatal-seals-an-in-vivo-study
#12
Gs Chandu, Bs Hema, Harsh Mahajan, Antriksh Azad, Ipsita Sharma, Anurag Azad
AIM: To evaluate retention of complete denture base with different types of posterior palatal seals. MATERIAL AND METHODS: Ten male patients between the age group of 50 years to 60 years were selected for the study. After the primary and secondary impressions were taken, five casts were made including a cast without posterior palatal seal, a cast with single bead posterior palatal seal, a cast with double bead posterior palatal seal, a cast with butterfly shaped posterior palatal seal, and a cast with posterior palatal seal with low fusing compound by functional method...
2014: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/25258260/defining-the-posterior-palatal-seal-on-a-definitive-impression-for-a-maxillary-complete-denture-by-using-a-nonfluid-wax-addition-technique
#13
Russell Wicks, Swati Ahuja, Vinay Jain
The posterior palatal seal area is defined as the soft tissue area at or beyond the junction of the hard and soft palates on which pressure within physiologic limits can be applied by a removable complete denture to aid in its retention. The retention of the maxillary denture is affected by the extent and the design of the posterior palatal seal. This article discusses a method of defining the posterior palatal seal on a definitive impression for a maxillary complete denture by using microabrasion and a nonfluid wax addition technique...
December 2014: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/25095851/prosthetic-rehabilitation-of-acquired-maxillary-defects-secondary-to-mucormycosis-clinical-cases
#14
Rupal J Shah, Manish Khan Katyayan, Preeti Agarwal Katyayan, Vishal Chauhan
Maxillary necrosis can occur due to bacterial infections such as osteomyelitis, viral infections, such as herpes zoster or fungal infections, such as mucormycosis, aspergillosis etc. Mucormycosis is an opportunistic fungal infection, which mainly infects immunocompromised patients. Once the maxilla is involved, surgical resection and debridement of the necrosed areas can result in extensive maxillary defects. The clinician is to face many a challenge in order to replace not only the missing teeth, but also the lost soft tissues and bone, including hard palate and alveolar ridges...
March 2014: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/24576719/the-study-of-anatomic-structures-in-establishing-the-posterior-seal-area-for-maxillary-complete-dentures
#15
Kyu-Young Kyung, Kee-Deog Kim, Bock-Young Jung
STATEMENT OF PROBLEM: The spatial relationship between the foveae palatinae and vibrating lines varies among individuals; such variability could be related to the contour of the palate. PURPOSE: The purpose of this study was to investigate the relative location of the foveae palatinae and vibrating lines and to determine the correlation between the seal area of the posterior palate and the palatal contour with lateral cephalogram radiography. MATERIAL AND METHODS: Fifty participants were examined...
September 2014: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/24118134/a-complete-denture-impression-technique-survey-of-postdoctoral-prosthodontic-programs-in-the-united-states
#16
Mamta Mehra, Farhad Vahidi, Robert W Berg
PURPOSE: The purpose of the study was to survey program directors of postdoctoral prosthodontic programs in the United States regarding their programs' complete denture impression techniques. The key objectives of the survey were to identify the current trends in complete denture impression making and to determine which techniques and materials are taught in US postdoctoral prosthodontic programs. MATERIALS AND METHODS: An online survey was sent to all program directors of US postdoctoral prosthodontic programs...
June 2014: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/23787192/assessment-of-changes-following-en-masse-retraction-with-mini-implants-anchorage-compared-to-two-step-retraction-with-conventional-anchorage-in-patients-with-class-ii-division-1-malocclusion-a-randomized-controlled-trial
#17
RANDOMIZED CONTROLLED TRIAL
Salma Al-Sibaie, Mohammad Y Hajeer
BACKGROUND: No randomized controlled trial has tried to compare treatment outcomes between the sliding en-masse retraction of upper anterior teeth supported by mini-implants and the two-step sliding retraction technique employing conventional anchorage devices. OBJECTIVE: To evaluate skeletal, dental, and soft tissue changes following anterior teeth retraction. DESIGN AND SETTING: Parallel-groups randomized controlled trial on patients with class II division 1 malocclusion treated at the University of Al-Baath Dental School in Hamah, Syria between July 2011 and May 2013...
June 2014: European Journal of Orthodontics
https://www.readbyqxmd.com/read/23605828/complete-denture-with-pharyngeal-bulb-prosthesis
#18
Y G Naveen, M S Jagadeesh, Paranjay Prajapati, Rachappa Mallikarjuna
Velopharyngeal dysfunction is the inability of the soft palate to affect complete seal with the posterior or lateral pharyngeal walls. Rehabilitation of these patients with palatal defects is challenging for both surgical and prosthetic fields of dentistry. The development of sophisticated surgical techniques and procedures has greatly enhanced the rehabilitation of congenital or acquired palatal defects. However, some of these patients may present oral or systemic factors contraindicating surgical intervention...
2013: BMJ Case Reports
https://www.readbyqxmd.com/read/23059563/effect-of-different-curing-temperatures-on-the-distortion-at-the-posterior-peripheral-seal-an-in-vitro-study
#19
COMPARATIVE STUDY
Nirmala Pasam, R B Hallikerimath, Aman Arora, Shilpi Gilra
CONTEXT: Most of the maxillary complete dentures do not adapt accurately to the cast because of the changes in the resin during polymerization. The amount of heat associated with processing of polymethyl methacrylate has been correlated with the adaptation of the processed denture base to its supporting tissues. AIMS: This study conducted to determine the effect of different curing temperatures on the accuracy of fit of a complete maxillary denture and to compare with that of fiber-reinforced acrylic resins...
May 2012: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/22829825/repair-of-a-perforated-sinus-membrane-with-a-subepithelial-palatal-conjunctive-flap-technique-report-and-evaluation
#20
S A Gehrke, S Taschieri, M Del Fabbro, S Corbella
The maxillary sinus grafting procedure has proven to be an acceptable modality for bone augmentation to provide a base for endosseous implants, routinely used for the rehabilitation of posterior maxilla. Perforation of the membrane is the most common complication in this type of procedure. This paper presents a technique for repairing a perforated Schneiderian membrane with a conjunctive connective tissue graft harvested from the palate and shows the histological and radiographic evaluation of the results. Ten consecutives cases with the occurrence of membrane perforation were included in this study...
2012: International Journal of Dentistry
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