scholarly journals Combination of Digital and Conventional Workflows in the CAD/CAM-Fabrication of an Implant-Supported Overdenture

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3688
Author(s):  
Michael Benno Schmidt ◽  
Angelika Rauch ◽  
Marcus Schwarzer ◽  
Bernd Lethaus ◽  
Sebastian Hahnel

Completely digital workflows for the fabrication of implant-supported removable restorations are not yet common in clinical dental practice. The aim of the current case report is to illustrate a reliable and comfortable workflow that reasonably merges conventional and digital workflows for the CAD/CAM‑fabrication of implant-supported overdentures. The 53-year old patient was supplied with a digitally processed complete denture in the upper jaw and, simultaneously, with an overdenture supported by four interforaminal implants in the lower jaw. The overdenture included a completely digitally processed and manufactured alloy framework that had been fabricated by selective laser sintering. The case report indicates that digital manufacturing processes for extensive and complex removable restorations are possible. However, as it is currently not yet possible to digitally obtain functional impressions, future developments and innovations might focus on that issue.

2012 ◽  
Vol 59 (1) ◽  
pp. 51-56
Author(s):  
Aleksandar Medojevic ◽  
Milica Jovanovic-Medojevic ◽  
Djordje Nejkovic

Implantology has become an important therapeutic procedure that allows complete aesthetic and functional rehabilitation of the oro-facial system in edentulous patients. Implant supported prosthetic restorations can be fixed in two ways, by cement or screws. Both techniques have advantages and disadvantages and their selection depend on situation in patient?s mouth. The aim of this study was to describe complete process of prosthetic rehabilitation in an edentulous patient, from pre-implant preparation, through implant placement and fixation of final restoration on implants. In this case report, one ceramo-metal bridge was fixed by screws in the lower jaw while the other one was fixed using glass-ionomer cement in the upper jaw. After bone augmentation and time necessary for its osseointegration (6 to 8 months), 16 implants were placed in both jaws. Eight weeks after the implant placement, final prosthetic rehabilitation was achieved by cementation of one ceramo-metal bridge in the upper jaw using glass ionomer cement and fixation of the second bridge with screws in the lower jaw. To achieve successful implant supported prosthetic rehabilitation, the treatment protocol must be followed from the beginning to the end of the therapy.


2020 ◽  
Vol 26 (1) ◽  
pp. 37-47
Author(s):  
S.S. Polishchuk ◽  
O.O. Kotsyura ◽  
M.O. Dmitriev ◽  
V.O. Orlovskiy ◽  
M.V. Popov

The question of the relationship between the metric characteristics of cranial structures and odontometric parameters, and the possibility of building models based on them, which can later find their practical application in dental practice, remain a pressing problem of modern medical science. The purpose of the study is to establish the features of the relationship between the linear dimensions of molars with the cephalometric parameters of the brain and facial skull of practically healthy men in the northern region of Ukraine. 32 practically healthy residents of the northern region of Ukraine (from Kyiv, Zhytomyr, Sumy and Chernihiv regions) underwent computed tomography followed by odontometry of molars and cephalometry. The correlations between odontometric and cephalometric parameters were assessed using Spearman’s nonparametric statistics in the licensed package “Statistica 6.1”. The peculiarities of the correlations of the studied characteristics of molars with the indicators of the cerebral skull are established – multiple, only direct reliable (r = 0.35-0.57) and unreliable (r = 0.30-0.35) average correlation force (18.7% on the upper jaw, of which the relative majority with vestibular-lingual and mesio-distal dimensions and 24.1% on the lower jaw, of which the relative majority with the height of the teeth, their crowns and the length of the tooth roots); as well as with the indicators of the facial skull – mostly direct reliable (r = 0.35-0.51) and unreliable medium strength (r = 0.30-0.37) correlations, in most cases of a single nature (6.0% on the upper jaw and 6.6% on the lower jaw, almost uniformly with the height of the teeth, their crowns, root length, vestibular-lingual and mesio-distal dimensions). The results of correlation analysis of craniofacial structures are necessary for the correct construction of mathematical models, which can later find their practical application in dental practice and forensic medicine.


Author(s):  
Evgenia N. Anisimova ◽  
N. U Anisimova ◽  
R. S Babadjanyan ◽  
M. V Gromovik

On the basis of clinical and functional studies, a protocol for conducting safe local anesthesia in outpatient dental practice has been developed. The essence of the protocol is anesthesia with the treatment and removal of teeth in the upper jaw and lower jaw in the frontal section using a 4% articaine solution with a vasoconstrictor of 1: 200,000 under the infiltration method of anesthesia with an efficiency of 97.3 ± 1.3%, duration 29.2 ± 2.48 minutes and an MPA of 96.3 ± 1.23% and an injection rate of 1 ml / min; in anesthesia of the molars in the lower jaw using the conductive method at the mandibular orifice with the obligatory aspiration test with 4% articaine with epinephrine 1: 200000 with an efficiency up to 92.54% ± 1.3 and a duration of 35.2 ± 2.43 minutes with a speed drug administration - 1 ml / min. Improving the effectiveness of anesthesia to 95.54 ± 0.3% is achieved by the periodontal method of introducing a 4% solution of articaine with a vasoconstrictor of 1: 200,000.


2017 ◽  
Vol 376 ◽  
pp. 1-11
Author(s):  
Cristina Savencu ◽  
Liliana Porojan ◽  
Mihaela Bîrdeanu ◽  
Adrian Boloș ◽  
Sorin Porojan ◽  
...  

Technological developments in the field of based metal alloys have led to the implementation of novel manufacturing processes in dental practice. The aim of the study was to evaluate surface characteristics of Co–Cr dental alloys fabricated via conventional casting, computerized milling, selective laser sintering and selective laser melting. The morphology and the topography of the samples were investigated by SEM / EDAX (Model INSPECT S) and AFM (Model Nanosurf® EasyScan 2 Advanced Research). Depending on the nature and chemical composition of the samples the morphology is different. The microstructure of Co–Cr dental alloys depends on the manufacturing technique. Given to the differences in microstructural properties among the tested specimens, further differences in their technological achievement and clinical behavior can be anticipated.


2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Doğu Ömür Dede ◽  
M. Cenk Durmuşlar ◽  
Onur Şahın ◽  
Ayşegül Köroğlu ◽  
Özer İşısağ

This case report presents a patient who had been rehabilitated with a telescopic overdenture and implant supported fixed partial denture (ISFPD). The treatment process was as follows: (1) fabricating telescopic crowns and overdenture prosthesis for the lower jaw and a temporary complete denture for the upper jaw, (2) using the temporary denture as diagnostic and surgical guide to optimize dental implant placement, and (3) fabricating ISFPD for the upper jaw. Using the patient’s existing or temporary denture not only serves as an alternative surgical guide to calibrate the dental implant locations but also helps to finish the restoration at desired dimension, size, and anatomic form.


2021 ◽  
Vol 10 (4) ◽  
pp. 1-6
Author(s):  
Daniel Hernández-González ◽  
◽  
Jennifer Orozco-Páez ◽  

Introduction: Ectodermal dysplasia (ED) comprises a broad group of genetic disorders characterized by alterations of the structures derived from the ectoderm, including those of the stomatognathic system. Case Report: The present article aims to report the prosthetic management of a patient with anhidrotic ectodermal dysplasia. A male patient diagnosed with ED who attended the dental consultation displaying oligodontia; underdeveloped alveolar ridges were observed. Results: The established treatment consisted of the adaptation of implant-supported fixed full-arch prosthesis designed through CAD-CAM technology for the lower jaw and of a removable partial prosthesis with muco-dental support for the upper jaw. The dental approach of patients with ED is based on a correct analysis of the facial characteristics and stomatological conditions of each subject. Conclusion: A multidisciplinary approach is mandatory due to the biological and functional complexity in biomechanical terms of these individuals.


2017 ◽  
Vol 2 (1) ◽  
pp. 76
Author(s):  
Elvi Elvi ◽  
Edy Machmud ◽  
Bahruddin Thalib ◽  
Armawati Arafi ◽  
Indah Sulistiawaty

Objective: To give information about management of releasable full denture in patient with pseudo jaw relation class IIIMethods: A 58 years old woman came with complaints that she could not chew food and felt shy when she laughed, the woman asked a denture made for her. Last tooth withdrawal was 3 months ago. Shape of upper jaw sharp edge is triangle (pointed alveolar ridge), while lower jaw sharp edge is in resorbtion condition. Making of denture was started with initial molding, physiology molding, bite determination, and teeth arrangement based on Lingualized occlusion to insertion.Results: A case with pseudo jaw relation class III successfully treated using denture with lingualized occlusion.Conclusion: Teeth arrangement using occlusion pattern Lingualized occlusion can give natural appearance to patient and stability of denture.


2018 ◽  
Vol 1 (1) ◽  
pp. 40
Author(s):  
Nur Cecilia Herdianti ◽  
Soekobagiono Soekobagiono ◽  
Agus Dahlan

Background: Complete denture is a removable denture replacing all the missing teeth and tissue in the upper jaw and lower jaw. The purpose of making complete denture is to improve the function of chewing, aesthetic functions and maintaining patient's oral health. Complete edentulous ridge will causes resorption, until it become flat. A flat ridge is associated with difficulties in providing successful dentures. Purpose: This case report aims to reported the treatment of complete edentulous maxillary and mandibular with a flat ridge using semi-adjustable articulator. Case(s): A 63-year-old male patient visited the Prosthodontic Clinic of Dentistry Faculty, Airlangga University with complete edentulous maxillary and mandibular, also flat ridge in his mandibular.  Case Management: This case is using semi-adjustable articulator (Stratos 300). Some accessories in Stratos 300 were used in this case, such as centric tray to help determine the height of bite, gnathometer M to help the process of functional impression and bite block, also tooth arrangement with 2D templates. Conclusion: The use of semi-adjustable articulator (Stratos 300) could restore stomatognathic function in accordance with patient’s condition.


2018 ◽  
Vol 1 (1) ◽  
pp. 197-201
Author(s):  
Siti Salmiah

Gigi natal dan neonatal merupakan kasus gigi yang tumbuh sejak bayi lahir atau selama 30 hari setelah bayi lahir. Kasus ini merupakan kelainan erupsi pada gigi desidui, dimana gigi erupsi sebelum atau lebih cepat dari waktunya. Insidensi gigi natal berkisar 1: 2000 sampai 1: 3000 angka kelahiran. Gigi natal dan neonatal biasanya tumbuh pada rahang bawah bagian depan sehingga menyebabkan masalah dalam pemberian ASI, karena gigi tersebut menyebabkan luka pada gingiva, mukosa oral, lidah bayi dan puting susu ibu. Selain itu, karena gigi belum terbentuk sempurna dan hanya berpegang pada tepi gusi menyebabkan gigi goyang. Hal ini dikhawatirkan gigi dapat terlepas dan tertelan sehingga dapat menyebakan gangguan pernafasan. Pada kasus ini, bayi lahir dengan gigi sudah erupsi pada rahang bawah bagian depan. Orangtua tidak langsung membawa bayi kedokter gigi dan membiarkan saja kondisi tersebut sampai bayi berusia 3 bulan dan gigi sudah menyebabkan pembengkakan dan ulkus digingiva anterior rahang bawah dan atas, dilabial rahang atas dan permukaan ujung lidah. Kondisi ini menyebabkan bayi tidak mau minum susu sehingga berat badannya turun. Perawatan pada gigi natal ini dilakukan ekstraksi dengan general anastesi karena kondisi bayi tidak memungkinkan untuk dikerjakan diunit dental praktek dokter gigi. Kesimpulannya perawatan gigi natal harus segera dilakukan sebelum menimbulkan masalah lebih lanjut pada bayi. Natal and neonatal teeth are teeth that appear since the infant was born or in the first 30 days after birth. This is an abnormal eruption in deciduous teeth, where the teeth erupt before or faster than the time. The incidence of natal teeth ranges from 1:2000 to 1:3000 birth rates. Natal and neonatal teeth usually appear on front lower jaw causing problems in breastfeeding because the teeth cause pain to the gingiva, oral cavity, infant's tongue and mother's nipples. In addition, because the teeth have not been fully formed and only held on to the edge of the gums, it causes the teeth shaky. It is feared that the teeth can be fell out and swallowed which can cause respiratory problems. In this case, the infant was born with erupted teeth in the front jaw. Parents did not take the infant to the dentist immediately and let the condition until the infant aged 3 months. The teeth caused swelling and ulcer in anterior gingiva of the lower and upper jaw, in the maxillary labialfrenum, and on the tip of the tongue. This condition caused the infant did not want to drink milk so that his weight dropped. General anesthesia for extraction was taken to treat the natal teeth because of impossible condition to take the infant to a dental practice unit. In conclusion, natal dental care had to be done immediately before causing further problems for infants.


Author(s):  
Tatjana Perović ◽  
Ilija Aleksić ◽  
Zorica Blazej

Maxillary hypoplasia is one of the forms of class III malocclusion. On average, 60%  class III malocclusions are characterized by maxillary underdevelopment in all three directions. Anomalies in position, size and the shape of facial bones, maxilla in particular, usually appear in childhood, become more pronounced in adolescence until the end of the growth period. The aim of the paper is to show the camouflage treatment of the patient in adolescence with maxillary hypoplasia. Using the RME method in the upper jaw, extraction in the lower jaw and fixed orthodontic devices in both jaws, a satisfactory result was achieved.


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