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https://www.readbyqxmd.com/read/28319216/influence-of-implant-number-and-location-on-strain-around-an-implant-combined-with-force-transferred-to-the-palate-in-maxillary-overdentures
#1
Tsung-Chieh Yang, Yi-Chen Chen, Tong-Mei Wang, Li-Deh Lin
This study evaluated the effect of implant number and location on strain around the implant and force transferred to the palate in maxillary implant overdentures (IODs), including two locators attached bilaterally in the canine region (IOD 2), four locators attached bilaterally in the canine and premolar regions (IOD 4CP), four locators attached bilaterally in the canine and molar regions (IOD 4CM), and six locators attached bilaterally in the canine, premolar, and molar regions (IOD 6). As the implant number increased, strain around the implant regions increased, whereas force transferred to the palate decreased under loading...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319215/number-and-location-of-mini-implants-retaining-a-mandibular-overdenture-to-resist-lateral-forces-a-preliminary-in-vitro-study
#2
Kyozo Takagaki, Tomoya Gonda, Yoshinobu Maeda
PURPOSE: The aim of this study was to determine the optimal number and location of mini-implants retaining an overdenture to resist lateral forces. MATERIALS AND METHODS: A strain gauge was attached to a mini-implant and placed in an edentulous mandible model. The following different implant locations were evaluated: one mini-implant at the midline, two mini-implants in the lateral incisor regions, two mini-implants in the canine regions, and four mini-implants...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319214/fabrication-of-a-mandibular-implant-supported-overdenture-with-a-new-attachment-system-a-review-of-current-attachment-systems
#3
Karnik Shah, Burak Yilmaz, Edwin McGlumphy
Since their introduction, implant-retained overdentures have represented a feasible, economical, and highly successful treatment option for completely edentulous patients. Different attachment systems have been effectively used to retain these implant overdentures, and each system has advantages and disadvantages. Locator attachment (Zest Anchors) is one system that has been widely used by clinicians, particularly, for two-implant-supported situations. Recently, Zest Anchors developed a new locator-style abutment, Locator R-Tx...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319212/treatment-outcomes-for-mandibular-mini-implant-retained-overdentures-a-systematic-review
#4
Jin-Hong Park, Jeong-Yol Lee, Sang-Wan Shin
PURPOSE: This systematic review evaluated treatment outcomes for mandibular mini-implant-retained overdentures (MMIOs) in terms of (1) implant survival rate, (2) peri-implant marginal bone loss, (3) prosthodontic maintenance and complication occurrence, and (4) patient satisfaction. MATERIALS AND METHODS: Pertinent literature published in English before October 12, 2015 was identified using a MEDLINE and EMBASE search strategy and hand searching of relevant journals...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319208/posterior-mandibular-ridge-resorption-associated-with-different-retentive-systems-for-overdentures-a-7-year-retrospective-preliminary-study
#5
Moustafa Abdou Elsyad, Shahinaz Sayed Mohamed, Ahmad Fathalla Shawky
PURPOSE: This retrospective study compared posterior mandibular residual ridge resorption with two different retentive mechanisms for overdentures after 7 years. MATERIALS AND METHODS: A convenience sample of 18 edentulous men was assigned to one of two equal groups. Two implants were placed in the mandibular canine areas for each patient using the conventional two-stage surgical protocol, and the implants were splinted with a round bar 3 months later. New mandibular overdentures were then connected to the bars with clips (clip-retained overdentures, CR group) or resilient liners (resilient liner-retained overdentures, RR group)...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319205/support-ratio-between-abutment-and-soft-tissue-under-overdentures-a-comparison-between-use-of-two-and-four-abutments
#6
Manami Abe, Tsung-Chieh Yang, Yoshionobu Maeda, Takanori Ando, Masahiro Wada
PURPOSE: The purpose of this preliminary in vivo study was to compare force distribution on abutments (tooth or implant) and tissues supporting overdentures with two or four abutments. MATERIALS AND METHODS: A convenience sample of five subjects with tooth and/or implant-supported overdentures was enrolled. Recordings were completed on each subject using a force-measuring system mounted on a metal framework with four anteroposterior spread abutments (A), four abutments with denture bases (B), and on two anterior abutments with denture bases (C)...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28314082/an-international-survey-among-prosthodontists-of-the-use-of-mandibular-implant-supported-dental-prostheses
#7
Mats Kronstrom, Gunnar E Carlsson
PURPOSE: To evaluate the use of implant-supported overdentures (IOD) and implant-supported fixed dental prostheses (IFDP) in patients with edentulous mandibles among international prosthodontists. MATERIALS AND METHODS: A questionnaire was sent by e-mail to all clinically active prosthodontists in the International College of Prosthodontists with questions related to implant treatment of the edentulous mandible performed in 2015. RESULTS: One hundred and sixteen prosthodontists from 33 countries responded to the questionnaire...
March 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28299262/success-rate-in-implant-supported-overdenture-and-implant-supported-fixed-denture-in-cleft-lip-and-palate-patients
#8
Jaine Zanolla, Flávio Monteiro Amado, Willian Saranholi da Silva, Bruno Ayub, Ana Lúcia Pompéia Fraga de Almeida, Simone Soares
BACKGROUND: The prosthetic treatment in cleft patients is challenging. Based on this, the aim of this study was to evaluate the longevity of prosthetic rehabilitation treatment with implant-supported overdenture (IOD) and implant-supported fixed denture (IFD) in cleft lip and palate patients in a period of 22 years. MATERIALS AND METHODS: The medical records of 72 patients were analyzed (29 males and 43 females), and the survival rate of the implants was evaluated...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28295492/association-between-occlusal-force-distribution-in-implant-overdenture-prostheses-and-residual-ridge-resorption
#9
Tameem Khuder, Norsiah Yunus, Eshamsul Sulaiman, Mohd Masood, Norliza Ibrahim, Taimur Khalid
BACKGROUND: This study aimed to compare residual ridge resorption (RRR) of anterior and posterior maxillary and mandibular edentulous ridges, in patients treated with mandibular implant overdentures (IOD) and compare with conventional complete dentures (CD), and to determine at each location, the association of RRR with the occlusal forces distribution and other patients' variables. METHODS: The anterior and posterior RRR of IOD (6 males, 17 females) and CD (12 males, 11 females) were determined using baseline and follow-up dental panaromic radiographs (DPT), (mean intervals 4±1...
March 10, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28293321/bone-height-changes-of-the-mandibular-edentulous-ridge-in-screw-retained-versus-telescopic-restorations-for-completely-edentulous-patients
#10
Eman Helal, Mohamed El-Zawahry, Ayman Gouda, Amr Hosny Elkhadem, Samira Ibrahim Ibrahim
AIM: This study was established to evaluate the amount of bone height changes in the posterior mandibular area of edentulous patients receiving screw-retained prostheses versus removable telescopic implant overdentures. MATERIAL AND METHODS: Every patient received four inter-foraminal implants regarding the mandibular arch and four anterior implants for the maxillary arch, computer guided surgical guides were planned for the insertion of the implants accurately with a flapless technique...
March 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28291859/short-dental-implants-retaining-two-implant-mandibular-overdentures-in-very-old-dependent-patients-radiologic-and-clinical-observation-up-to-5-years
#11
Sabrina Maniewicz, Ramona Buser, Elena Duvernay, Lydia Vazquez, Angelica Loup, Thomas V Perneger, Martin Schimmel, Frauke Müller
PURPOSE: To describe the survival rate and peri-implant bone loss in very old patients dependent for their activities of daily living (ADL), treated with mandibular two-implant overdentures (IODs) in the context of a previously reported randomized controlled trial. MATERIALS AND METHODS: A total of 19 patients received two interforaminal Straumann implants (Regular Neck, 4.1 mm diameter, 8 mm length) that were subsequently loaded with Locator attachments, transforming their preexisting inferior conventional denture into an IOD...
March 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28291854/load-transfer-characteristics-of-three-implant-retained-overdentures-with-different-interimplant-distances
#12
Emre Tokar, Bulent Uludag, Ozgul Karacaer
PURPOSE: Implant-retained overdentures are the first choice of rehabilitation for edentulous mandibles. Bone morphology and anatomical landmarks may be influenced by the location and angulation of implants and distances between the implants. The purpose of this study was to investigate stress distribution characteristics and to compare stress levels of three different attachment designs of three-implant-retained mandibular overdentures with three different interimplant distances. MATERIALS AND METHODS: Three photoelastic mandibular models with three implants were fabricated using an edentulous mandible cast with moderate residual ridge resorption...
March 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28281622/implant-retention-systems-for-implant-retained-overdentures
#13
D P Laverty, D Green, D Marrison, L Addy, M B M Thomas
Implant retained overdentures are being increasingly utilised in both general and specialist practice to rehabilitate patients with missing teeth, particularly those that are edentate. This article aims to inform the reader of a variety of retention systems that are available to retain an implant overdenture and to understand how these systems work, their advantages and disadvantages and to outline some of the clinical and treatment planning considerations involved in selecting the most appropriate retention system for patients...
March 10, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28279083/finite-element-analysis-of-different-loading-conditions-for-implant-supported-overdentures-supported-by-conventional-or-mini-implants
#14
K Solberg, F Heinemann, P Pellikaan, L Keilig, H Stark, C Bourauel, I Hasan
The effect of implants' number on overdenture stability and stress distribution in edentulous mandible, implants and overdenture was numerically investigated for implant-supported overdentures. Three models were constructed. Overdentures were connected to implants by means of ball head abutments and rubber ring. In model 1, the overdenture was retained by two conventional implants; in model 2, by four conventional implants; and in model 3, by five mini implants. The overdenture was subjected to a symmetrical load at an angle of 20 degrees to the overdenture at the canine regions and vertically at the first molars...
March 10, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28258636/long-term-clinical-and-prosthetic-outcomes-of-soft-liner-and-clip-attachments-for-bar-implant-overdentures-a-randomized-controlled-clinical-trial
#15
Moustafa Abdou ELsyad, Nasser Hussein Shaheen, Tarek Mohy Ashmawy
BACKGROUND: Long term clinical and prosthetic outcomes of soft liner attachments for bar/implant overdentures was not sufficiently investigated. OBJECTIVES: The aim of this trial was to evaluate clinical and prosthetic outcomes of resilient liner and clip attachments for bar/implant-retained mandibular overdenture after 7 years. METHODS: Thirty edentulous male participants received 2 implants in the canine areas of the mandible. Three months later, implants were splinted with a resilient bar...
March 4, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28251678/costs-and-clinical-outcomes-of-implant-placement-during-ablative-surgery-and-postponed-implant-placement-in-curative-oral-oncology-a-five-year-retrospective-cohort-study
#16
Jan-Willem G H Wetzels, Gert J Meijer, Ron Koole, Eddy M Adang, Matthias A W Merkx, Caroline M Speksnijder
OBJECTIVES: The aim of this study was to compare costs and clinical outcomes of two protocols for implant placement in edentulous oral cancer patients: implant placement during ablative surgery and postponed implant placement. MATERIAL AND METHODS: All edentulous patients who underwent curative tumor surgery between 2007 and 2009 at the Radboud university medical center (Radboudumc) and UMC Utrecht, both in the Netherlands, were included retrospectively. At the Radboudumc, 79 of 98 patients received implants during ablative surgery...
March 2, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28243395/use-of-polyaryletherketone-paek-based-polymer-for-implant-supported-telescopic-overdenture-a-case-report
#17
Chan Park, Dae-Jeon Jun, Sang-Won Park, Hyun-Pil Lim
Although many prosthetic materials exist for fabrication of implant-supported telescopic overdentures, available materials have not been thoroughly evaluated from a functional standpoint. This case report describes the use of polyaryletherketone (PAEK) based polymer for an implant-supported telescopic overdenture, a seldom used material in dentistry. This material is lighter than traditional materials, can accommodate changes in retentive forces, and is an easily retrievable by CAD/CAM fabrication. This case highlights the possibility of using new polymer materials for implant-supported telescopic overdentures...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243387/the-influence-of-the-number-and-the-type-of-magnetic-attachment-on-the-retention-of-mandibular-mini-implant-overdenture
#18
Eunjee Lee, Soo-Yeon Shin
PURPOSE: The aim of this study was to compare the retention of mini implant overdenture by the number, the type of magnetic attachment, and the directions of applied dislodging force. MATERIALS AND METHODS: The experimental groups were designed by the number and type of magnetic attachment. Twenty samples were tested with Magden implants. Each attachment was composed of the magnet assembly in overdenture sample and the abutment keeper in a mandibular model. Dislodging forces were applied to the overdenture samples (50...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28240583/comparison-of-canadian-and-united-states-predoctoral-dental-implant-education
#19
Christopher A Barwacz, Gustavo Avila-Ortiz, Veerasathpurush Allareddy, Monelle Tamegnon, Kaitlin Hoogeveen
OBJECTIVE: The objective of this study was to assess the current status of Canadian predoctoral implant programs in terms of director demographics, curriculum characteristics and preferences in the techniques that are used to teach and carry out implant therapy. We compared the findings to analogous data recently acquired from dental schools in the United States. METHODS: A survey instrument was sent electronically to directors of predoctoral implant programs at all 10 accredited dental schools in Canada...
August 2016: Journal—Canadian Dental Association, Journal de L'Association Dentaire Canadienne
https://www.readbyqxmd.com/read/28237542/randomized-study-on-the-effect-of-single-implant-versus-two-implant-retained-overdentures-on-implant-loss-and-muscle-activity-a-12-month-follow-up-report
#20
A Y Alqutaibi, A F Kaddah, M Farouk
The objective was to evaluate and compare single- and two-implant retained overdentures for the rehabilitation of the edentulous mandible. Fifty-six edentulous subjects were eligible for inclusion. Using a random sampling system, a single implant or two implants were placed in the mandible. After 3 months, locator attachments were connected to the implants and the denture delivered with the retentive components incorporated in the denture base. Implant failure and muscle activity were evaluated at the 3-, 6-, and 12-month follow-up examinations...
February 22, 2017: International Journal of Oral and Maxillofacial Surgery
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