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1.
J Oral Implantol ; 48(4): 263-268, 2022 Aug 01.
Article in English | MEDLINE | ID: mdl-34091668

ABSTRACT

This study was designed to evaluate the accuracy of a novel computer-designed and selectively laser sintered surgical guide for flapless dental implant placement in the edentulous jaw. Fifty dental implants were placed in 11 patients with at least 1 totally edentulous jaw. Initially, cone-beam computed tomography (CBCT) was performed in each patient to define the virtual position of the dental implants based on the assessment of bone availability and the proposed dental prosthesis. After virtual planning, 3D surgical guides were printed using selective laser sintering. CBCT was repeated after the surgery, and the pre- and postoperative images were overlapped in computer-assisted design software to compare the planned and actual positions of the dental implants using a 1-sample t test. The mean ± angular standard deviation between the long axes of the planned and final dental implant positions was 4.58° ± 2.85°; the linear deviation in the coronal position was 0.87 ± 0.49 mm and in the apical region of the dental implants was 1.37 ± 0.69 mm. These differences were statistically significant (P < .001). The proposed modifications reduced the deviations, resulting in an improvement in the technique. We were able to place implants and temporary prostheses using the present protocol, taking into account the differences between the planned and final positions of the dental implants.


Subject(s)
Dental Implants , Jaw, Edentulous , Surgery, Computer-Assisted , Computer-Aided Design , Computers , Cone-Beam Computed Tomography/methods , Dental Implantation, Endosseous/methods , Humans , Imaging, Three-Dimensional/methods , Jaw, Edentulous/diagnostic imaging , Jaw, Edentulous/surgery , Lasers , Patient Care Planning , Surgery, Computer-Assisted/methods
2.
J Oral Implantol ; 47(4): 325-332, 2021 Aug 01.
Article in English | MEDLINE | ID: mdl-32835368

ABSTRACT

Dental surgeons need in-depth knowledge of the bone tissue status and gingival morphology of atrophic maxillae. The aim of this study is to describe preoperative virtual planning of placement of 5 implants and to compare the plan with the actual surgical results. Three-dimensional (3D) planning of rehabilitation using software programs enables surgical guides to be specially designed for the implant site and manufactured using 3D printing. A patient with 5 teeth missing was selected for this study. The patient's maxillary region was scanned with cone-beam computed tomography (CBCT), and a cast model was produced. After virtual planning using ImplantViewer, 5 implants were placed using a printed surgical guide. Two weeks after the surgical procedure, the patient underwent another CBCT scan of the maxilla. Statistically significant differences were detected between the virtually planned positions and the actual positions of the implants, with a mean deviation of 0.36 mm in the cervical region and 0.7 mm in the apical region. The surgical technique used enables more accurate procedures compared with the conventional technique. Implants can be better positioned, with a high level of predictability, reducing both operating time and patient discomfort.


Subject(s)
Dental Implants , Surgery, Computer-Assisted , Computer-Aided Design , Cone-Beam Computed Tomography , Dental Implantation, Endosseous , Humans , Imaging, Three-Dimensional , Printing, Three-Dimensional
3.
J Oral Implantol ; 45(4): 281-287, 2019 Aug.
Article in English | MEDLINE | ID: mdl-31206348

ABSTRACT

The aim of this study was to evaluate the linear and angular deviations of the implants installed by the computerized tomography (CT)-guided surgery technique. Eighteen patients who underwent implant insertion by means of CT-guided surgery participated in this study. Ten of these patients had a fully edentulous maxilla, and 8 had a fully edentulous mandible. The patients received a total of 115 implants, of which 81 implants were installed in the maxilla and 34 installed in the mandible. Tomographic guides were made for tomographic examination in both the upper and lower jaws. After the image acquisition, the virtual planning of the positioning of the implants was performed in relation to the previously made prosthesis. The measurement of the linear and angular deviations between the virtual planning and the final position of the implants was performed with the overlap of the planning and postoperative tomography. There were no differences in the linear and angular deviations of the implants installed in the maxilla and mandible. Compared with the coronal region, there was a trend of greater linear deviations in the apical regions of the implants and a greater tendency toward deviations in the posterior regions than in the anterior regions of both arches. The CT-guided surgery promoted the installation of implants with high accuracy and allowed the installation of straight pillars in all cases evaluated. The linear deviations were not different in the different regions of the mouth or in the different portions of the implants.


Subject(s)
Dental Implantation, Endosseous , Dental Implants , Jaw, Edentulous , Surgery, Computer-Assisted , Computer-Aided Design , Dental Prosthesis, Implant-Supported , Humans , Maxilla , Patient Care Planning , Prospective Studies , Tomography, X-Ray Computed
4.
ImplantNewsPerio ; 2(3): 441-449, mai.-jun. 2017. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-847256

ABSTRACT

A aplicação de um fluxo digital é um recurso cada vez mais utilizado na Implantodontia. A técnica de cirurgia guiada tem evoluído constantemente, acompanhando os avanços de hardwares e softwares aplicados na Odontologia, resultando no aumento da indicação e precisão dos guias cirúrgicos obtidos. O objetivo deste trabalho foi, através de um relato de caso clínico, demonstrar o fluxo de trabalho utilizado para aplicação da técnica de cirurgia guiada em reabilitação total de maxila, utilizando o software coDiagnostiX (Dental Wings, Chemnitz, Alemanha). Após as etapas de preparo pré-tomográfico, obtenção da digitalização de superfície, aquisições tomográficas e planejamento virtual, foram instalados seis implantes cone-morse (Neodent, Curitiba, Brasil), com a utilização de um guia cirúrgico obtido por impressão 3D. Após o período de osseointegração, foi instalada uma prótese fixa implantossuportada. O planejamento virtual em software específico, através da digitalização de superfície associada à tomografia computadorizada de feixe cônico (TCFC), propõe um diagnóstico previsível, seguro e a possibilidade de oferecer maior segurança e precisão nas reabilitações com implantes osseointegrados.


The application of a digital workflow is an increasingly used resource in Implantology. The guided implant surgery (GIS) has constantly evolved, following the advances of hardware and software applied in Dentistry, resulting in an increase in the indication and precision of the surgical guides. The objective of this article is, through a clinical case report, to demonstrate a workflow used to apply guided surgery technique in full-arch maxillary rehabilitation using the coDiagnostiX software (Dental Wings, Chemnitz, Germany). After the pre-tomographic preparation, surface scanning, tomographic acquisitions and virtual planning, six morse taper implants (Neodent, Curitiba, Brazil) were placed using a surgical guide obtained by 3D printing. After a period of osseointegration, a implant supported fixed prosthesis was placed. The virtual planning in specific software, through surface scanning associated with cone beam computed tomography (CBCT), proposes a predictable, safe diagnosis and the possibility of offering greater safety and precision in the rehabilitations with osseointegrated implants.


Subject(s)
Humans , Female , Aged , Computer-Aided Design , Dental Implantation , Dental Prosthesis, Implant-Supported , Surgery, Computer-Assisted/instrumentation , Surgery, Computer-Assisted/methods , Technology, Dental
5.
Article in English | LILACS | ID: lil-794501

ABSTRACT

Dental implant fixation techniques are widely studied in order to reduce surgical morbidity. Computer-guided flapless surgery has been considered an efficient alternative that presents several advantages and some limitations. This technique allows the virtual planning and simulation of the prosthetic-surgical treatment that can help predict the difficulties and limitations in order to reduce possible errors. In addition to the prosthetic predictability, computer-guided surgery enhances accuracy and reduces surgical morbidity. Thus, the aim of this study was to report on a 7-year follow-up of immediately loaded implants inserted into an edentulous maxilla using virtual planning and flapless surgery.


Las técnicas de fijación del implante dental se estudian ampliamente para reducir la morbilidad quirúrgica. La cirugía sin flapless guiada por ordenador ha sido considerada como una alternativa eficiente con varias ventajas y algunas limitaciones. Esta técnica permite la planificación virtual y simulación del tratamiento protésico quirúrgico con la predicción de las dificultades y limitaciones para reducir posibles errores. Además de la previsibilidad de prótesis, la cirugía guiada por ordenador mejora la precisión y reduce la morbilidad quirúrgica. Por lo tanto, el objetivo de este estudio fue reportar a 5 años de seguimiento de los implantes de carga inmediata insertados en un maxilar desdentado utilizando la planificación virtual y la cirugía sin colgajo. El presente caso prospectivo informó el éxito del tratamiento y destacó la importancia de la planificación, lo que justifica el costo de esta tecnología.


Subject(s)
Humans , Female , Adult , Jaw, Edentulous/surgery , Surgery, Computer-Assisted/methods , Immediate Dental Implant Loading/methods , Surgical Flaps , Treatment Outcome , Immediate Dental Implant Loading/instrumentation
6.
ImplantNews ; 12(1): 75-86, 2015. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-749374

ABSTRACT

Este relato mostra um paciente de 72 anos de idade onde sua prótese total inferior sobre implantes motivou-a para usar uma prótese total fixa na maxila. Após os procedimentos de TCFC e protéticos no plano de tratamento, guias estereolitográficos foram construídos para uma colocação de implantes dentários sem levantamento de retalho. Cinco implantes foram colocados nas regiões 14, 13, 11, 22, e 24 com torque de inserção de 32 Ncm. A prótese total fixa definitiva foi entregue em até 48 horas. Após dois anos e 11 meses, não foram registradas complicações. Quando adequadamente indicada, a cirurgia virtual guiada tem se tornado uma realidade efetiva para pacientes idosos.


This case reports on a 72 years-old patient whose complete mandibular implant-supported prosthesis motivated her to use a fi xed appliance in the maxilla. After CBCT and prosthodontic procedures for treatment planning, stereolithographic guides were constructed for a flapless dental implant placement. Five implants were placed in the regions of 14, 13, 11, 22 and 24 with a 32 Ncm insertion torque. The final maxillary implant-supported prosthesis was delivered until 48 hours. After two years and 11 months, no complications were reported. When properly indicated, virtual guided surgery has become an effective possibility for elderly patients.


Subject(s)
Humans , Male , Aged , Continuity of Patient Care , Mandibular Prosthesis Implantation , Patient Satisfaction , Denture, Complete, Lower/standards , Surgery, Computer-Assisted
7.
ImplantNews ; 11(5): 675-681, 2014. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-731513

ABSTRACT

Este relato de caso demonstra o uso de um sistema de cirurgia guiada sem retalho para colocação de uma prótese em carga imediata. Uma paciente do gênero feminino, 38 anos de idade, compareceu à clínica com queixas estéticas e funcionais. Inicialmente, os dentes remanescentes na mandíbula foram extraídos e uma prótese implantossuportada foi instalada. Na maxila, após o enceramento diagnóstico, tomografias computadorizadas feixe cônico (TCFC) foram realizadas uma tomografia da paciente com o guia tomográfico em posição e um escaneamento apenas do guia. As imagens foram fundidas em um software específico, e o planejamento virtual foi realizado. Seis implantes de titânio com conexão cone-morse foram instalados (torque final 32 Ncm), conectados aos minipilares, e o processo de moldagem foi finalizado. A infraestrutura desenhada recebeu a prótese maxilar definitiva através de um processo de cimentação passiva (Panavia) dos cilindros de titânio, em carga imediata. Após três meses, foram realizados exames clínicos e uma nova radiografia panorâmica. A prótese foi removida e os implantes foram testados individualmente. Todos os implantes apresentaram-se osseointegrados, sem sinais e sintomas irreversíveis ou persistentes (dor, infecção, neuropatias, parestesia ou mobilidade) e sem evidência de radioluminescência peri-implantar. Dentro das limitações do caso e mediante indicação clínica adequada, a técnica de carga imediata com cirurgia sem retalho fornece excelentes resultados estéticos, reduzindo o tempo cirúrgico e os sintomas pós-operatórios, ao mesmo tempo em que preserva maior quantidade de tecido.


This case report demonstrates the use of flapless guided surgery for immediate implant placement and loading. A female, 38 years-old patient was referred with claims of poor esthetics and function. First, all remaining mandibular teeth were extracted and an implant-supported prosthesis delivered. For the maxillary arch, CBCTs were made based on the diagnostic wax-up, with and without the tomographic guide. Images were superimposed with the aid of an specifi c software, and the virtual planning was made. Six cone-morse dental titanium implants (32 Ncm torque) were installed and connected to mini-abutments for impression procedures. The designed framework received the definative prosthesis through passive cementation (Panavia) using titanium cylinders under immediate loading. Latter, the prosthesis was removed and all implants tested individually, showing osseointegration and no signs of irreversible or persistent symptoms (pain, infection, neuropathies, paresthesia, or mobility) or peri-implant radiolucency were seen. Within the limits of this case and following adequate clinical indication, the fl apless guided surgery with immediate implant loading provided excellent esthetic results, shortening the surgical time and postoperative discomfort, while also allowing for more tissue preservation


Subject(s)
Humans , Female , Adult , Dental Implants , Immediate Dental Implant Loading , Surgery, Computer-Assisted
8.
ImplantNews ; 11(6): 803-811, 2014. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-743130

ABSTRACT

O objetivo deste relato foi analisar uma nova proposta de cirurgia assistida por computador, utilizando o planejamento virtual realizado através de imagens tomográficas computadorizadas e de um dispositivo posicionador de tubos (DPT). Uma paciente de 31 anos de idade apresentou-se com fratura do incisivo central superior esquerdo (21). Após o exame por tomografia computadorizada feixe cônico, no modelo de trabalho foi confeccionado um guia de poliuretano e acoplado um suporte tomográfico com três referências metálicas; em seguida, foi certificada a estabilidade deste guia tomográfico (GT) na arcada do paciente. Através do GT, imagens tomográficas foram captadas em ambiente tridimensional virtual computadorizado. O planejamento foi realizado no programa KEA-tech. Um implante cone-morse e um sistema específico de cirurgia guiada, ProssGuide (Dabi Atlante, Ribeirão Preto/SP, Brasil), foram usados, um biomaterial foi colocado na região vestibular, e a paciente recebeu uma coroa provisória em resina acrílica. Novas imagens tomográficas foram geradas para comparação. A maior diferença observada foi no ângulo mesiodistal (1,91°), e a menor na medida vestibulolingual (0,01 mm). As outras medidas tiveram diferenças menores de 1 mm ou 1º. Considerando-se os limites do caso, os dados demonstraram a acurácia do programa computacional e da técnica. Entretanto, mais ensaios clínicos com amostras maiores devem ratificar os dados obtidos neste caso clínico.


The aim of this report was to analyze a new guided-surgery, computer assisted modality through virtual planning according CBCT images and a tube positioning device (TPD). A 31 years-old was referred with a fracture of the maxillary left central incisor (21) After CBCT examining, a stone dental model was made and a polyurethane guide attached to a tomographic support (GT) with three reference points, being its stability certified into the patient´s jaw. Then, CBCT images were made and captured in a virtual environment. Dental implant planning was made with the KEA-tech program. A cone-morse dental implant was inserted with an specific guided surgery hardware ProssGuide (Dabi Atlante, Ribeirão Preto/SP, Brasil). After, a biomaterial was packed into the defect and the patient received an acrylic, provisional cemented crown. New CBCT images were made for comparison. The highest difference was seen at the mesiodistal angle (1.91°), and the lowest linear at the buccolingual aspect (0.01 mm). The other measurements were lower than 1 mm or 1º. Within the limits of this case, initial data revealed accuracy and safety of this computational software and technique. However, more clinical trials with large sample sizes are necessary to corroborate the findings of this clinical case.


Subject(s)
Humans , Female , Adult , Dental Implantation , Surgery, Computer-Assisted
9.
ImplantNews ; 10(1): 61-68, 2013. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-731419

ABSTRACT

A cirurgia guiada sem retalho, associada a um planejamento computadorizado, realizada por meio de guia cirúrgico prototipado representa um dos grandes avanços da Implantodontia moderna, no sentido de melhorar a previsibilidade estético-funcional na colocação de implantes, proporcionando grande precisão no tratamento. Suas principais vantagens incluem a redução do tempo cirúrgico, maior preservação dos tecidos, diminuição dos sintomas pós-operatórios, como dor, edema e inflamação, permitindo uma cicatrização mais rápida. Portanto, essa técnica oferece ganho estético imediato, redução da morbidade do paciente, maior precisão cirúrgica, conforto ao paciente e segurança do profissional. O objetivo desse trabalho foi descrever cada etapa da técnica da cirurgia guiada sem retalho, ilustrado por um caso clínico com reabilitação unitária em área estética.


The computer-planned, flapless surgery along with a stereolithographic-guided dental implant placement represents one of the great achievements of contemporary Implant Dentistry to improve esthetics and precision. Its main advantages include chairside time reduction, more tissue preservation, less postoperative symptoms such as pain, edema, and inflammation, which allows for a faster healing process. Thus, there are immediate esthetic benefits, less patient morbidity, more patient comfort, and safety for the dental practitioner. The aim of this paper is to describe each surgical step in flapless-guided surgery through a clinical case of a single unit in the esthetic zone.


Subject(s)
Humans , Male , Adult , Dental Implants , Surgery, Computer-Assisted
10.
ImplantNews ; 10(6a): 159-168, 2013. ilus, tab
Article in Portuguese | LILACS | ID: lil-761246

ABSTRACT

As reabilitações implantossuportadas permitem o restabelecimento da função e da estética após perdas dentárias totais e parciais com previsibilidade e altas taxas de sucesso. A instalação de implantes imediatos com carga imediata, a fim de evitar as alterações dimensionais sofridas pelo osso alveolar e tecidos moles, após a extração dentária, apresenta algumas vantagens em relação à técnica convencional, como redução do número de procedimentos cirúrgicos, possível preservação do osso alveolar, redução de custos e do período de ausência dentária, além de maior aceitação por parte do paciente. Vários estudos têm demonstrado que implantes instalados em alvéolos frescos e com carga imediata apresentam uma taxa de sobrevivência entre 94,5% a 100%. No entanto, para que um resultado funcional e estético adequado seja obtido, é fundamental que seja realizado um planejamento preciso, lançando mão dos recursos de diagnóstico bi e tridimensionais disponíveis, para que fatores relacionados à qualidade e à quantidade óssea sejam avaliados...


Dental implant-supported restorations present predictability and high success rates in restoring function and esthetics. The immediate placement/loading of dental implants is considered an option to reduce the risk of dimensional changes due to alveolar bone resorption and soft tissue collapse following tooth extraction. Other advantages over the conventional technique are the reduced number of surgical procedures, possible alveolar bone preservation, reduced costs, shorter period for temporary crowns or bridges, and greater acceptance by the patient. Several studies have shown that implants placed in fresh sockets with immediate loading have a high survival rate between 94.5 to 100%. However, for achieving a functional and aesthetic result, adequate treatment planning is fundamental including clinical and two- and three-dimensional diagnostic approaches...


Subject(s)
Humans , Biocompatible Materials , Immediate Dental Implant Loading
11.
Rev. dental press periodontia implantol ; 2(2): 100-109, abr.-jun. 2008. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-605484

ABSTRACT

A cirurgia livre de retalho associada a um planejamento computadorizado proporciona grande precisão no tratamento, permitindo a confecção de próteses para serem instaladas no momento da cirurgia. As suas principais vantagens incluem menor sangramento, maior conforto, menor edema e recuperação mais acelerada no pós-operatório. Este artigo tem o objetivo de discutir, através de um caso clínico, os passos para a elaboração deste tipo de reabilitação.


The flapless surgery associated to computerized planning provides great precision in the treatment, allowing the confection of the prosthesis to be installed in the moment of the surgery. It's main advantages includes minor bleed, greater comfort, smaller swelling and sped up recovery in the postoperative. The aim of this article is to discuss, through a clinical case, the steps related to the confection of this rehabilitation.


Subject(s)
Humans , Female , Middle Aged , Dental Implantation, Endosseous , Immediate Dental Implant Loading , Surgery, Computer-Assisted , Clinical Protocols , Imaging, Three-Dimensional
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