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1.
Quintessence Int ; 0(0): 308-316, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33533237

RESUMEN

OBJECTIVES: In-vitro data have shown that cross-linked hyaluronic acid (HA) enhances the proliferative and migratory properties of cells involved in periodontal wound healing/regeneration, stabilizes the blood clot, reduces the inflammatory response, and facilitates angiogenesis. The aim of this study was to histologically evaluate the effects of cross-linked HA alone or combined with a collagen matrix (CM) on the periodontal wound healing/regeneration in intrabony defects. METHOD AND MATERIALS: Two-wall intrabony defects (5 mm wide, 5 mm deep) were surgically created at the distal and mesial aspects of mandibular premolars in six beagle dogs. The 24 defects were randomly treated as follows: open flap debridement (OFD) + HA, OFD + CM, OFD + HA + CM (HA/CM), and OFD alone (control). At 2 months, the animals were euthanized for histologic evaluation. RESULTS: The HA (2.43 ±â€¯1.25 mm) and HA/CM (2.60 ±â€¯0.99 mm) groups yielded statistically significantly (P < .05) greater formation of new attachment (ie, linear length of new cementum adjacent to newly formed bone, with inserting collagen fibers) compared with the OFD (0.55 ± 0.99 mm) group. Among the four treatment groups, the HA/CM group demonstrated the highest amount of regenerated tissues, although no statistically significant differences in any of the histometric parameters were observed between the HA and HA/CM groups. CONCLUSION: Within their limits, it can be concluded that cross-linked HA alone or combined with CM promotes periodontal wound healing/regeneration in two-wall intrabony defects in dogs.


Asunto(s)
Pérdida de Hueso Alveolar , Procedimientos Quirúrgicos Reconstructivos , Pérdida de Hueso Alveolar/cirugía , Animales , Regeneración Ósea , Colágeno , Perros , Regeneración Tisular Guiada Periodontal , Ácido Hialurónico , Cicatrización de Heridas
2.
Int J Oral Maxillofac Implants ; 36(1): 59-67, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33600524

RESUMEN

PURPOSE: Short dental implants serve as a valuable alternative for patients with limited bone height. Immediate or early provisionalization facilitates a more physiologic environment for the gingival tissues to be modeled. The purpose of this meta-analysis was to systematically review and evaluate the implant survival and marginal bone loss with immediate and early loading protocols of short dental implants (≤ 6 mm). MATERIALS AND METHODS: A literature search (electronic and manual) was conducted to identify studies with a focused PICO question: "In patients with short dental implants, does loading time affect treatment outcomes?" Studies using an immediate or early loading protocol for restoration of short implants with a mean follow-up of at least 1 year, and refraining from the use of advanced surgical procedures (sinus floor elevation, bone augmentation), were included. After evaluating patient selection and outcome reporting biases, a meta-analysis was conducted to assess implant survival and bone loss for studies fulfilling the inclusion criteria. Bone loss differences between immediate and early loading protocols were evaluated by Student t test, and Spearman correlation analysis was used to analyze the trends between crown-to-implant (C/I) ratio and bone loss. RESULTS: A total of 396 studies with patients receiving short implants (≤ 6 mm) with immediate or early prosthetic loading protocols were identified. For the 7 included studies, the pooled implant survival rate for 322 implants with a follow-up ranging from 1 to 10 years (5 years) was 91.63% (95% CI: 88% to 94%), with a mean bone loss effect estimate of 0.52 ± 0.1 mm (z = 3.07, P < .002). The differences observed in the mean bone loss for studies using immediate loading as opposed to early loading were not statistically significant. A moderate but significant positive correlation was observed between the C/I ratio and mean bone loss levels (r = 0.67, P = .02). CONCLUSION: Short implants with immediate or early loading protocols have satisfactory long-term treatment prospects with satisfactory implant survival rates and minimal bone loss.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Carga Inmediata del Implante Dental , Elevación del Piso del Seno Maxilar , Pérdida de Hueso Alveolar/diagnóstico por imagen , Pérdida de Hueso Alveolar/cirugía , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Resultado del Tratamiento
3.
Artículo en Inglés | MEDLINE | ID: mdl-33528445

RESUMEN

Vertical bone augmentation (VBA) procedures for dental implant placement are biologically and technically challenging. Systematic reviews and meta-analyses of studies on VBA have failed to identify clinical procedures that provide superior results for treatment of the vertical ridge deficiencies. A decision tree was developed to guide clinicians on selecting treatment options based on reported vertical bone gains (< 5 mm, 5 to 8 mm, > 8 mm). The choice of a particular augmentation technique will also depend on other factors, including the size and morphology of the defect, location, and clinician or patient preferences. Surgeons should consider the advantages and disadvantages of each option for the clinical situation and select an approach with low complications, low cost, and the highest likelihood of success.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Implantes Dentales , Pérdida de Hueso Alveolar/cirugía , Trasplante Óseo , Árboles de Decisión , Implantación Dental Endoósea , Humanos
4.
Quintessence Int ; 0(0): 0, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33491386

RESUMEN

Objective: The aim was to evaluate the efficacy of periodontal regenerative therapy using enamel matrix derivatives (EMDs) in aggressive periodontitis patients, and to determine the contribution of maintenance via periodic supportive periodontal treatment. Method and materials: In total, 28 patients were evaluated, comprising 74 intrabony sites. In 50 sites EMD gel was applied, and in 24 sites EMD was combined with deproteinized bovine xenograft. Patients were assigned to a supportive periodontal treatment program; 18 patients fulfilled the program, defined as the well-maintained (WM) group; 10 did not comply, defined as the nonmaintained (NM) group. Probing depth (PD), clinical attachment level (CAL), and radiographic bone level (BL) were recorded. Data were compared presurgically (T0), 6 months postsurgery (T1), and 3 to 10 years posttreatment (T2). Results: Both surgical modalities achieved similar PD reduction, CAL gain, and BL gain, maintained over time. T1 to T2 showed a mean gain/loss of 0.21 ±â€¯0.5 mm and 0.04 ±â€¯1.1 mm, and -0.65 ±â€¯3.0 mm and -0.73 ±â€¯3.0 mm for PD and CAL, respectively, at the WM/NM groups, respectively. BL gain was 21.6% and 11.5% for the WM/NM groups, respectively (P < .05). The courses of the PD, CAL, and BL differed between the WM and NM groups during the observation periods (P < .05). Conclusion: Periodontal regeneration via EMD with/without the combination of deproteinized bovine xenograft can be maintained in aggressive periodontitis cases. It appears that periodic supportive periodontal treatment is a determinant factor in achieving this task.


Asunto(s)
Periodontitis Agresiva , Pérdida de Hueso Alveolar , Proteínas del Esmalte Dental , Recesión Gingival , Periodontitis Agresiva/cirugía , Pérdida de Hueso Alveolar/cirugía , Animales , Bovinos , Estudios de Seguimiento , Recesión Gingival/cirugía , Regeneración Tisular Guiada Periodontal , Humanos , Pérdida de la Inserción Periodontal/cirugía , Bolsa Periodontal/cirugía , Resultado del Tratamiento
5.
Clin Oral Investig ; 25(3): 807-821, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33438084

RESUMEN

AIM: The present systematic review appended with meta-analysis aimed to evaluate the efficacy of bone replacement graft (BRG) with guided tissue regeneration (GTR) over BRG or open flap debridement (OFD) alone in the treatment of grade II furcation defects. MATERIALS AND METHODS: An electronic literature search of PubMed, Cochrane Library and Google Scholar databases accompanied with manual searching was done. Randomized controlled trials (RCTs) up to October 2019, comparing BRG+GTR with BRG or OFD in grade II furcation defects, were identified. Clinical attachment level (CAL) gain, changes in gingival marginal level (GML), vertical defect fill (VDF), horizontal defect fill (HDF) and reduction in defect volume were the outcome parameters. RESULTS: Of a total of 12, 9 studies compared BRG+GTR vs BRG while 3 compared BRG+GTR vs OFD. Meta-analysis was carried out for CAL gain, VDF, HDF and GML changes. In the BRG+GTR vs BRG comparison group, out of 9 studies, 6 RCTs showed standardized mean difference (SMD) of 0.513 for VDF, 9 RCTs showed SMD of 0.83 for HDF and 2 RCTs showed SMD of 0.651 for CAL gain, whereas only 2 studies in the same group reported reduction in defect volume. Three studies of the BRG+GTR vs OFD group exhibited significant VDF and CAL gain with SMD of 2.002 and 1.161 respectively. However, no significant change was recorded for GML in both groups. CONCLUSION: The present systematic review indicates supplemental benefits of combination therapy of BRG+GTR over monotherapy in resolving grade II furcation defects. CLINICAL RELEVANCE: In our quest to achieve maximum regeneration in grade II furcation defects, combination therapies such as BRG+GTR have been accepted as treatment choices over other modalities. Clinical situations warranting near-complete regeneration of the tissues in such defects are better suited for combination therapies.


Asunto(s)
Pérdida de Hueso Alveolar , Defectos de Furcación , Pérdida de Hueso Alveolar/cirugía , Regeneración Ósea , Trasplante Óseo , Estudios de Seguimiento , Defectos de Furcación/cirugía , Regeneración Tisular Guiada Periodontal , Humanos , Membranas Artificiales , Pérdida de la Inserción Periodontal , Resultado del Tratamiento
6.
Quintessence Int ; 52(2): 112-121, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33433077

RESUMEN

OBJECTIVE: Retrograde peri-implantitis (RPI) is defined as bone loss around an osseointegrated implant apex that usually appears within the first few months of its placement. This retrospective study aimed to evaluate the relationships between RPI and demographic factors, local bone and intraoral factors, and implant and surgery-related factors. METHOD AND MATERIALS: A retrospective study was conducted in 116 patients with a total of 369 implants placed between January and June 2019. The associations between RPI and the following data were evaluated: location of the recipient site, bone quality, reason for previous tooth loss, condition of adjacent teeth, marginal bone loss, immediate or late placement of implants, implant brand and size, activation of lesions, and treatment modality.
Results: Among the 14 (3.8%) implants that showed RPI, 10 (5.8%) were in the maxilla and four (?2.0%) were in the mandible, which were detected before prosthetic loading. There was no significant difference in terms of RPI between the arches. Of the 14 RPI implants, four (28.?6%) were placed into a previously periapical lesion site, three (21.4%) had endodontically treated adjacent teeth, two (14.3%) were immediately placed following extraction, three (?21.4%) revealed marginal bone loss, and one (7.1%) was lost at the abutment connection. Eight RPI implants healed spontaneously, while the remaining six were subjected to treatment (P = .05).
Conclusion: Local bone and intraoral factors, particularly the reason for tooth loss at the recipient site and the condition of the adjacent teeth, had stronger effects on RPI than other factors. (Quintessence Int 2021;52:112-121; doi: 10.3290/j.qi.a45264).


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Periimplantitis , Pérdida de Hueso Alveolar/diagnóstico por imagen , Pérdida de Hueso Alveolar/cirugía , Protocolos Clínicos , Implantación Dental Endoósea/efectos adversos , Implantes Dentales/efectos adversos , Humanos , Mandíbula , Periimplantitis/diagnóstico por imagen , Periimplantitis/terapia , Estudios Retrospectivos
7.
J Periodontal Res ; 56(2): 298-305, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33314140

RESUMEN

BACKGROUND AND OBJECTIVE: Following tooth extraction, bone resorption is especially severe in cases complicated with buccal dehiscence bone defects. To minimize this, various bone graft materials have been used for alveolar ridge preservation. This study aimed to evaluate additional effects of the concomitant use of recombinant human fibroblast growth factor-2 (rhFGF-2) with ß-tricalcium phosphate (ß-TCP) on ridge preservation in a dehiscence defect model after tooth extraction in dogs. MATERIALS AND METHODS: The maxillary first premolars of six beagle dogs were extracted and dehiscence defects of 4 × 4 × 5 mm (mesio-distal width × bucco-palatal width × depth) were created. Bilateral defects were filled with ß-TCP combined with 0.3% (w/v) rhFGF-2 (test sites) or the scaffold alone (control sites). Twelve weeks post-surgery, histologic and histometric evaluations were performed. RESULTS: Morphological measurements using micro-computed tomography revealed a significantly greater bone volume at the test sites (48.9 ± 9.06 mm3 ) than at the control sites (38.8 ± 7.24 mm3 ). Horizontal widths of the alveolar ridge at the coronal and middle position at the test sites (2.18 ± 0.71 mm, 2.93 ± 0.53 mm) were significantly greater than those at the control sites (1.47 ± 0.41 mm, 2.36 ± 0.45 mm, respectively). Regarding the histological parameters, the occupation rate of mineralized bone in the original defects was slightly higher at the test sites (44.07 ± 10.19%) than that at the control site (41.15 ± 6.56%). CONCLUSIONS: These results indicate that the adjunct use of rhFGF-2 with ß-TCP is effective for alveolar ridge preservation in fresh extraction sockets with dehiscence defects.


Asunto(s)
Pérdida de Hueso Alveolar , Factor 2 de Crecimiento de Fibroblastos , Pérdida de Hueso Alveolar/cirugía , Proceso Alveolar/diagnóstico por imagen , Proceso Alveolar/cirugía , Animales , Fosfatos de Calcio/uso terapéutico , Perros , Factor 2 de Crecimiento de Fibroblastos/uso terapéutico , Humanos , Extracción Dental/efectos adversos , Alveolo Dental/cirugía , Microtomografía por Rayos X
8.
Cient. dent. (Ed. impr.) ; 17(3): 209-214, sept.-dic. 2020. ilus
Artículo en Español | IBECS | ID: ibc-198603

RESUMEN

La regeneración localizada de grandes defectos horizontales en los procesos alveolares, previa a la inserción de implantes dentales, sigue siendo un procedimiento quirúrgico desafiante en cirugía bucal. Entre los procedimientos quirúrgicos más utilizados para tal propósito se encuentran la corticotomía con expansión, injerto en bloque "onlay" y la regeneración ósea guiada (ROG), todos ellos con sus diferentes grados de predictibilidad. El uso de micromalla de titanio en combinación con injertos y sustitutos óseos es un método eficiente para la contención, estabilización y protección de estos injertos, permitiendo así una mejor regeneración de los tejidos. Esta técnica no queda exenta de posibles complicaciones asociadas como pueden ser la infección, necrosis del injerto o exposición de la malla de titanio. En el presente artículo se pretende mostrar la evidencia clínica de la efectividad del uso del colgajo pediculado de rotación palatina como método válido para evitar la exposición de la malla de titanio durante la regeneración ósea guiada


Localized regeneration of large horizontal defects in alveolar processes prior to the insertion of dental implants remains a challenging surgical procedure in oral surgery. Among the most widely used surgical procedures for this purpose are expansion corticotomy, onlay block graft and guided bone regeneration all of them with their different degrees of predictability. The use of titanium micromesh in combination with bone grafts and bone substitutes is an efficient method for the containtment, stabilization and protection of these grafts, thus allowing better tissue regeneration. This technique is not exempt from associated complications such as infection, graft necrosis or exposure of the titanium micromesh.This article aims to show the clinical evidence of the effectiveness of using the palatal rotated pedicle graft as an effective method to avoid exposing the micromesh during guide bone regeneration procedure


Asunto(s)
Humanos , Masculino , Anciano , Regeneración Ósea , Implantación Dental Endoósea/métodos , Odontología Basada en la Evidencia/métodos , Resultado del Tratamiento , Colgajos Quirúrgicos , Pérdida de Hueso Alveolar/cirugía , Plasma Rico en Plaquetas , Cirugía Bucal
9.
Rev. Asoc. Odontol. Argent ; 108(3): 129-137, dic. 2020. ilus, tab
Artículo en Español | LILACS | ID: biblio-1147924

RESUMEN

Objetivo: Presentar el uso de la cirugía guiada para la resolución quirúrgico-protética de un caso clínico con colocación de implantes de longitud estándar (>7 mm) en un maxilar inferior atrófico, sin regeneración ósea guiada. Caso clínico: Una paciente que requería terapia con implantes en sectores posteroinferiores se presentó en la Cátedra de Odontología Integral Adultos de la Facultad de Odontología de la Universidad de Buenos Aires. Primero se realizó una tomografía computarizada de haz cónico del maxilar inferior para evaluar la disponibilidad ósea. La planificación se efectuó siguiendo un protocolo digital a fin de optimizar la selección de los implantes y su instalación en función de la futura rehabilitación protética y el tejido óseo disponible. Después se escanearon ambos maxilares y el registro intermaxilar; estas imágenes ­junto con las correspondientes a la tomografía (DICOM)­ fueron importadas como archivos (STL) a un software específico de diseño para determinar digitalmente la posición 3D ideal de los implantes y diseñar una guía quirúrgica de precisión. Luego se realizó la cirugía de instalación de los implantes con la guía quirúrgica, y finalmente los implantes fueron rehabilitados por medio de coronas cemento-atornilladas. Conclusión: El uso de la cirugía guiada permitió optimizar el tejido óseo disponible para la instalación de implantes en función de la futura rehabilitación protética (AU)


Aim: To present the use of guided surgery for the prosthetic resolution of a clinical case with placement of implants of standard length (>7 mm) in an atrophic posterior mandible, with no need of bone regeneration. Clinical case: A patient who required implants in the posterior sectors of the mandible attended to the department of Odontología Integral Adultos, Facultad de Odontología, Universidad de Buenos Aires, Argentina. A dental cone beam computed tomography (CBCT scan) of the lower jaw was done to assess bone availability and was decided to perform guided surgery for accurate implant placement. Both maxillaries and intermaxillary occlusal registration were scanned and imported into files (STL) together with those of the CBCT scan (DICOM) into specific design software. Following the digital protocol using a surgical guide the implants were placed and then restored with cemented-screwed crowns. Conclusion: Guided surgery allowed planning implant placement, guided by the final position of the prosthetic restoration, and optimizing the available bone (AU)


Asunto(s)
Humanos , Femenino , Anciano , Pérdida de Hueso Alveolar/cirugía , Cirugía Asistida por Computador , Implantación Dental Endoósea , Mandíbula , Argentina , Facultades de Odontología , Regeneración Ósea , Dentadura Parcial Fija , Tomografía Computarizada de Haz Cónico , Rehabilitación Bucal
10.
Niger J Clin Pract ; 23(12): 1767-1771, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33355833

RESUMEN

Alveolar bone loss subsequent to long-term edentulism and trauma may be severe and treatment plan is always an esthetic and functional challenge. Implant supported hybrid prosthesis is widely regarded as an effective treatment option for patients with excessive and irregular bone loss. However, implant placement is occasionally impossible without surgical procedures in such cases. This case report presents rehabilitation of 19-year-old maxillary anterior edentulous male patient with maxillary anterior bone defect and excessive cross-bite anterior closure with multidisciplinary approach. The patient was rehabilitated with implant supported hybrid prosthesis with Malo Bridge design following autogeneous iliac bone augmentation, teeth leveling with orthodontic treatment, and surgical placement of three implants. Esthetics, pleasing phonetics and function were achieved as desired with this treatment option and no complications were observed.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Implantes Dentales , Arcada Edéntula , Procedimientos Quirúrgicos Reconstructivos , Adulto , Pérdida de Hueso Alveolar/cirugía , Trasplante Óseo , Prótesis Dental de Soporte Implantado , Humanos , Arcada Edéntula/cirugía , Masculino , Maxilar/cirugía , Resultado del Tratamiento , Adulto Joven
11.
Int J Periodontics Restorative Dent ; 40(6): e235-e240, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33151196

RESUMEN

This case report describes the rehabilitation of an extremely atrophic posterior mandible using 4-mm ultrashort implants and reports clinical and radiographic outcomes 7 years after loading. The patient refused to undergo any other treatment, from the removable prosthesis to the reconstructive surgery, and asked for a fixed, minimally invasive solution in the shortest possible time. The residual bone height above the alveolar nerve was an average of about 5 mm, so it was decided to treat the patient with four 4-mm ultrashort implants. Within the limitations of this case report, this procedure appears successful at 7 years after loading in this specific case and could reduce invasiveness, rehabilitative times, and costs. However, longer follow-ups on a large number of patients coming from randomized controlled clinical trials are necessary before making more reliable recommendations.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Implantes Dentales , Pérdida de Hueso Alveolar/cirugía , Implantación Dental Endoósea , Diseño de Prótesis Dental , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Mandíbula/diagnóstico por imagen , Mandíbula/cirugía , Resultado del Tratamiento
12.
Rev. ADM ; 77(5): 252-256, sept.-oct. 2020. ilus
Artículo en Español | LILACS | ID: biblio-1146848

RESUMEN

Una de las causas de la evolución de la periodontitis es la formación de defectos óseos y pérdida de inserción clínica. Una manera de eliminar el defecto intraóseo y su bolsa periodontal es eliminar las paredes de hueso que componen el defecto para colocar el complejo dentogingival en una posición más apical. La cirugía ósea es un procedimiento periodontal resectivo que involucra la modificación del tejido óseo del soporte dental, la cual es una modalidad del tratamiento periodontal quirúrgico que puede utilizarse para eliminar eficazmente los defectos óseos periodontales para estabilizar la inserción periodontal. El objetivo del presente estudio es realizar una revisión de la literatura sobre las consideraciones actuales, técnicas y principios de la cirugía ósea resectiva en el paciente periodontalmente comprometido (AU)


One of the causes of the evolution of periodontitis is the formation of bone defects and loss of clinical attachment, where one way to eliminate the intraosseous defect and its periodontal pocket is to eliminate the bone walls that make up the defect to place the dentogingival complex in a more apical position. Bone surgery is periodontal surgery that involves the modification of the supporting bone tissue of the teeth, which is a modality of surgical treatment that can be used to effectively eliminate periodontal defects and stabilize the periodontal insertion. The aim of the present study is to conduct a literature review about the considerations, techniques and principles of resective bone surgery in the periodontally compromised patient (AU)


Asunto(s)
Humanos , Periodontitis/cirugía , Pérdida de Hueso Alveolar/cirugía , Proceso Alveolar/cirugía , Osteotomía/métodos , Bolsa Periodontal/cirugía , Colgajos Quirúrgicos , Alargamiento de Corona/métodos
13.
Clin Oral Implants Res ; 31(10): 1010-1024, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32799365

RESUMEN

OBJECTIVES: The objective of this randomized controlled trial was to compare alveolar ridge preservation using a bone substitute material and covered with a synthetic or porcine collagen membrane. MATERIALS AND METHODS: Thirty-two sockets in the aesthetic maxillary region of 30 patients were randomized into two groups. Randomization was stratified according to bone wall defect. Flapless technique was used, and sockets were grafted with bi-phasic calcium phosphate particulate bone substitute and covered by synthetic polyethylene glycol (PEG; test group) or porcine-derived collagen membrane (CM; control group). No primary closure was attempted. A cone beam computed tomography (CBCT) scan was performed immediately after the surgical procedure and repeated 22 weeks later. OnDemand3D was used to superimpose scan images and assess changes. The mean vertical and horizontal percentage bone loss were calculated and implants placed after 6 months with or without additional augmentation. RESULTS: There were no baseline differences between groups or dropouts. The mean percentage loss at the labial plate and at the coronal part of the sockets was statistically significantly lower in the test group compared with controls (-2.86% [SD = 13.48] versus 7.42% [SD = 11.95]; 13.45% [SD = 11.97] versus 28.59% [SD = 16.97]). Implants were placed after 6 months, and there was no difference in need for further augmentation between PEG (n = 5) or CM (n = 4). CONCLUSION: Sites treated with PEG membrane showed less percentage loss in horizontal and vertical measurements in this trial.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Pérdida de Hueso Alveolar/diagnóstico por imagen , Pérdida de Hueso Alveolar/prevención & control , Pérdida de Hueso Alveolar/cirugía , Animales , Colágeno , Tomografía Computarizada de Haz Cónico , Estética Dental , Humanos , Maxilar/diagnóstico por imagen , Maxilar/cirugía , Porcinos , Extracción Dental , Alveolo Dental/diagnóstico por imagen , Alveolo Dental/cirugía
14.
J Int Acad Periodontol ; 22(3): 109-116, 2020 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-32655036

RESUMEN

AIMS: This study aimed to determine the dimensional change in the alveolar ridge after using an anodized titanium foil (Tseal) in association with bovine bone (BB) grafting in damaged extraction sockets by cone-beam computerized-tomography. MATERIALS AND METHODS: Fifteen patients who had one hopeless tooth with over 80% of the buccal wall lost were selected and then the teeth were carefully extracted. The alveolar socket was filled with bovine bone and the Tseal was trimmed and adapted over the bone crest. The primary outcome variable was the change in the alveolar dimension (AD) measurements between baseline (T1) and 6 months (T2) after extraction in three points of analysis, 1mm, 3mm and 5mm below the palatal bone crest. RESULTS: Bone regeneration was observed to occur between 87% and 116% of the AD assessed at the baseline. No statistical differences were observed. The mean AD value varied from 7.82±2.75 mm (T1) to 8.02±2.43 mm (T2) in the 1 mm point, from 7.99±2.67 mm to 8.71±2.26 mm to 3 mm and 8.56±2.60 mm to 9.00±2.52 mm at 5 mm area. CONCLUSION: Bovine bone graft in association with Tseal achieved horizontal reconstruction of the alveolar crest in compromised socket within 6 months after surgery.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Pérdida de Hueso Alveolar/cirugía , Proceso Alveolar/diagnóstico por imagen , Proceso Alveolar/cirugía , Animales , Bovinos , Humanos , Estudios Prospectivos , Titanio , Extracción Dental , Alveolo Dental/diagnóstico por imagen , Alveolo Dental/cirugía
15.
J Biol Regul Homeost Agents ; 34(3 Suppl. 1): 35-43, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32618159

RESUMEN

The aim of this study was to report the use of extra-short and short implants in combination with Guided Bone Regeneration (GBR) to rehabilitate a case of severe mandibular reabsorption. A 55-yearold female patient asked for a fixed implant supported rehabilitation in 4.5 - 4.6 zone which showed severe atrophy. It was decided to use an extra-short 4 mm length and 4.1 mm Ø, Roxolid and SLActive implant (Straumann Standard Plus Regular Neck, Institut Straumann AG) in 4.5 position and a short 6 mm length and 4.8 mm Ø, Roxolid and SLActive implant (Straumann Standard Plus Wide Neck, Institut Straumann AG) in 4.6 position. The implants supported cemented fixed prosthesis. Examinations were performed at the day of the surgery and up to 7-years in function to evaluate implant stability and periapical radiography. One extra-short implant and one short implant were placed. After 7 years in function no biological or prosthetic complication were recorded. Within the limitation of this case report, the use of short and extra-short implants to support fixed prosthesis seem to be a feasible treatment alternative in severe mandibular atrophy.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Pérdida de Hueso Alveolar/diagnóstico por imagen , Pérdida de Hueso Alveolar/cirugía , Atrofia , Regeneración Ósea , Femenino , Estudios de Seguimiento , Humanos , Mandíbula/diagnóstico por imagen , Mandíbula/cirugía , Persona de Mediana Edad , Prótesis e Implantes , Resultado del Tratamiento
16.
Quintessence Int ; 51(10): 822-837, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32661522

RESUMEN

OBJECTIVES: Regeneration of intrabony defects is a challenging target of periodontal therapy. The biologic rationale for regeneration not only is based on incorporating the regenerative material, but also takes into consideration the defect's inherent healing capacity. The present study was carried out to evaluate the efficacy of decortication or intramarrow penetration performed with demineralized freeze-dried bone allograft (DFDBA) in the management of intrabony defects. METHOD AND MATERIALS: Forty chronic periodontitis (stage II and III periodontitis) patients having 40 intrabony defects were randomly assigned into test group (intrabony defect filled with DFDBA after intramarrow penetration along with open flap debridement [OFD+IMP+ DFDBA]) and control group (DFDBA along with open flap debridement [OFD+DFDBA]). Primary outcome measures included probing pocket depth, clinical attachment level, and percentage bone fill (%BF). All parameters were recorded at baseline, 6 months, and 9 months postsurgical follow-up. RESULTS: Mean reduction in probing depth and gain in clinical attachment level was statistically significantly higher at the interdental defect site in the test group compared to the control group at 9 months follow-up (P = .02 and .04, respectively). In radiographic parameters, statistically significant improvements in defect depth and gain in defect area were found in the test group (P = .00 and .03, respectively). Statistically significant improvements in %BF and linear bone growth (P = .02 and .00, respectively) were also observed in the experimental group (39.47 ± 13.92% and 1.41 ± 0.54 mm) in comparison with the control group (19.29 ± 14.24%, 0.62 ± 0.49 mm). CONCLUSION: Addition of intramarrow penetration with DFDBA in surgical periodontal therapy may enhance the healing potential of periodontal intrabony defects, as observed by greater improvement in clinical and radiographic outcomes.


Asunto(s)
Pérdida de Hueso Alveolar , Trasplante Óseo , Regeneración Tisular Guiada Periodontal , Aloinjertos , Pérdida de Hueso Alveolar/diagnóstico por imagen , Pérdida de Hueso Alveolar/cirugía , Humanos , Pérdida de la Inserción Periodontal/cirugía , Bolsa Periodontal/cirugía , Resultado del Tratamiento
17.
Int J Oral Maxillofac Implants ; 35(3): 576-584, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32406656

RESUMEN

PURPOSE: The purpose of this study was to compare success and outcomes among implants positioned either in grafted or ungrafted alveoli during 10 years of follow-up. MATERIALS AND METHODS: This retrospective analysis was conducted on data of subjects who underwent tooth extraction and alveolar ridge preservation. Sites, one per patient, were ranked into three groups: postextraction ungrafted alveoli, and postextraction grafted alveoli with either synthetic magnesium-enriched hydroxyapatite or porcine bone. An absorbable collagen sheet was used to completely cover all the sockets. A secondary intention healing was sought for all procedures. Data regarding implant survival and marginal bone loss around implants were gathered until the 10-year follow up. Pairwise comparisons were performed with nonparametric tests, and statistical significance was set at .01. RESULTS: Sixty-three subjects were included: 42 implants (19 and 23 in the magnesium-enriched hydroxyapatite and porcine bone groups, respectively) placed in grafted sites and 21 in nongrafted sites. The success rate of the grafted groups was 88.1% (CI: 78.3% to 97.9%) at the 10-year follow-up. On the other hand, in the ungrafted group, the overall success rate was 85.7% (CI: 70.8% to 100%). Peri-implant marginal bone loss at the 10-year follow-up for the magnesium-enriched hydroxyapatite group was 1.2 (0.7) mm, while for the porcine bone group, it was close to 0. The behavior of the ungrafted group appeared to be significantly different compared with both grafted groups; however, marginal bone levels ranging from 0.1 to 0.4 mm were observed from 3 to 10 years. CONCLUSION: A difference in terms of long-term success rates between grafted and ungrafted sites was not revealed. Bone loss was significantly higher in the magnesium-enriched hydroxyapatite grafted group compared with those in the other groups (without or with other bone substitute material).


Asunto(s)
Pérdida de Hueso Alveolar/cirugía , Sustitutos de Huesos , Implantes Dentales , Animales , Implantación Dental Endoósea , Estudios de Seguimiento , Humanos , Estudios Retrospectivos , Porcinos , Extracción Dental , Alveolo Dental/cirugía , Resultado del Tratamiento
18.
Minerva Stomatol ; 69(5): 295-301, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32407061

RESUMEN

BACKGROUND: Dental implants placed in medically compromised patients have predictable outcomes and a high rate of survival, compared to those placed in healthy patients. The aims of this study were to observe and compare implant survival/success rates and soft tissue response to tissue-level implants placed in healthy and medically compromised patients with a 1-year follow-up. METHODS: Seventy-two patients, 36 healthy patients (20 females and 16 males) and 36 medically compromised patients (18 females and 18 males) affected by cardiovascular diseases (arrythmia, hypertension, atrial fibrillation, bypass and pacemaker surgery), depression, endocrine metabolic diseases (hypercholesterolemia, type II diabetes, Hashimoto's thyroiditis), gastrointestinal diseases (gastritis, hiatal hernia, gastric ulcers), asthma, osteoporosis or glaucoma received one tissue-level implant. Measurements for primary and secondary outcomes were collected immediately after implant placement and at 1 year from implant insertion. RESULTS: Three were failed and two were survived out of a total of 72 implants. Among healthy patients, two implants failed while one was classified as survived; among Medically compromised patients one implant failed and another one was classified as survived. No statistically significant difference was found between the two groups in terms of success rate or survival rate. No statistically significant differences between the two groups' marginal bone level was observed. In healthy patients a mean loss of keratinized tissue (-0.1±0.6 mm) was reported, while in medically compromised patients a mean gain was reported (+0.5±0.8 mm). CONCLUSIONS: In terms of success, failure and survival rates, tissue level implants placed in healthy and in medically compromised individuals showed no short-term (1 year) differences.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Diabetes Mellitus Tipo 2 , Pérdida de Hueso Alveolar/cirugía , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Femenino , Estudios de Seguimiento , Humanos , Masculino , Resultado del Tratamiento
19.
J Oral Implantol ; 46(4): 407-413, 2020 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-32315416

RESUMEN

The aim of this case series was to assess, over a period of 24 months, the clinical and radiographic outcomes in partially edentulous patients receiving bone-level tapered implants. In total, 33 partially edentulous patients and 50 implants were evaluated. Patients received single or multiple implants in the posterior maxilla. Clinical and radiographic measurements of vertical bone levels were assessed at surgery, at loading, and 6, 12, and 24 months after surgery. The success and survival rates of the implants were also evaluated. Within the 24-month follow-up, only 1 implant failed (2.0%). Other biological or technical complications were not observed. The mean insertion torque was 34 ± 5.3 Ncm. Bone-level changes of 0.35 ± 0.23 mm were found between surgery and 12 months after surgery, and changes of 0.03 ± 0.05 mm were found between 12 months and 24 months after surgery. The overall change from surgery to 24 months after implant placement was 0.38 ± 0.24 mm. Most of the bone loss occurred between surgery and 3 months (0.28 ± 0.19 mm; P < .001); thereafter, the loss was minimal and statistically nonsignificant. Bone-level tapered implants yielded a high survival and success rate with minimal bone-level changes. Tapered implants could be considered as a predictable treatment option for partially edentulous patients with different types of bone qualities and loading protocols.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Pérdida de Hueso Alveolar/diagnóstico por imagen , Pérdida de Hueso Alveolar/cirugía , Implantación Dental Endoósea , Diseño de Prótesis Dental , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Maxilar/diagnóstico por imagen , Maxilar/cirugía , Resultado del Tratamiento
20.
J Int Acad Periodontol ; 22(2): 28-40, 2020 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-32224548

RESUMEN

BACKGROUND AND OBJECTIVES: Applications of porous titanium granule (PTG) in periodontal (furcation defects) and non-periodontal treatments have shown promising results. However, its role in periodontal intrabony defects still remains unexplored. Thus, we aim to assess the feasibility of PTG in obtaining reconstruction in intrabony defects and compare the outcome with that of open flap debridement (OFD). METHODS: Ten patients (three females and seven males) with a mean age of 34.7 years who constituted twenty (20) bilateral intrabony defects were recruited. Each patient contributed to two defects which were randomly treated by OFD alone (control group) or by OFD followed by grafting with PTG (test group). All the clinical and radiological parameters were recorded at baseline, three, six and nine months and statistically analyzed. RESULTS: The results of this study demonstrated that in clinical parameters there is no significant differences in the improvement from baseline to nine months. However, regarding the radiographic defect fill, there was significant gain from baseline to nine months only in the PTG sites. CONCLUSION: Within the limits of our study, the results of this trial indicate that reconstructive periodontal surgery with PTG offers minimal radiographic defect resolution with no significant improvements in clinical endpoints compared to open flap debridement.


Asunto(s)
Pérdida de Hueso Alveolar/cirugía , Regeneración Tisular Guiada Periodontal , Adulto , Desbridamiento , Femenino , Humanos , Masculino , Pérdida de la Inserción Periodontal/cirugía , Bolsa Periodontal/cirugía , Porosidad , Titanio , Resultado del Tratamiento
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