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1.
Quintessence Int ; 51(7): 578-584, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32500865

RESUMEN

An edentulous posterior maxilla can present a challenge for placement of dental implants due to the proximity of the maxillary sinus. Sinus augmentation is a surgical bone grafting procedure aimed to increase the bone height for implant support. A number of sinus augmentation techniques have been presented and the outcomes show good implant success rates. In order to achieve the desirable outcomes, it is important to gain knowledge of the maxillary sinus anatomy and complete a thorough preoperative evaluation. Being aware of the location of vasculature, nerves, and the presence of septa will help reduce the risk of intraoperative and postoperative complications. This review provides a narrative clinical overview related to the anatomy, preoperative evaluation, contraindications, techniques, postoperative care, outcome measures, and complications of sinus augmentation procedures.


Asunto(s)
Implantes Dentales , Elevación del Piso del Seno Maxilar , Implantación Dental Endoósea , Fracaso de la Restauración Dental , Maxilar , Seno Maxilar , Resultado del Tratamiento
2.
Dental Press J Orthod ; 25(2): 25-31, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32490924

RESUMEN

OBJECTIVE: Evaluate dental and skeletal changes resulting from the exclusive use of the cervical headgear for 15 ± 4 months in the treatment of patients with Class II division 1 malocclusion. METHODS: Differences between the beginning (T1) and immediately after the end of the therapy (T2) with the cervical headgear in growing patients (Experimental Group, EG, n = 23) were examined and compared, during compatible periods, with those presented by a group of untreated individuals (Control Group, CG, n =22) with similar malocclusions and chronological age. The cephalometric variables evaluated were: ANB, GoGn.SN, AO-BO, S'-ANS, S'-A, S'-B, S'-Pog and S'-U6 (maxillary first molar). The Shapiro-Wilk and Levene tests were used to evaluate the results. RESULTS: Significant differences were found relative to the ANB, S'-U6, AO-BO, S'-ANS, S'-A, S'-B and S'-Pog variables between T1 and T2 when comparing both groups. No statistically significant variation was found regarding the GoGn.SN angle. CONCLUSIONS: The use of cervical headgear promoted distal movement of the maxillary first molars and restricted the anterior displacement of the maxilla, without significantly affecting the GoGn.SN angle.


Asunto(s)
Maloclusión de Angle Clase II , Cefalometría , Aparatos de Tracción Extraoral , Humanos , Maxilar , Diente Molar , Estudios Prospectivos
3.
Dental Press J Orthod ; 25(2)2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32490925

RESUMEN

INTRODUCTION: Skeletal Class III malocclusion with asymmetry is one of the most difficult problems to correct in orthodontics. A functional shift of the mandible in growing patients may occur accompanying a Class III, due to constricted maxillary arch and occlusal interferences. Studies have indicated that posterior unilateral crossbite develops early and has a low rate of spontaneous correction. It may further lead to development of mandibular and facial asymmetry by growth and displacement of mandible if left untreated in growing patients. OBJECTIVE: This article reports the clinical case of a thirteen-year-old female patient in CVMI transition stage that had maxillary hypoplasia with a developing facial asymmetry. RESULTS: The case was successfully managed with bone-anchored facemask therapy and with elimination of occlusal interferences with guided occlusion. Reverse twin block in the retention phase maintained the results achieved. CONCLUSION: A four-year follow-up evaluation revealed successful maintenance of the treatment results.


Asunto(s)
Asimetría Facial , Maloclusión de Angle Clase III , Adolescente , Cefalometría , Femenino , Estudios de Seguimiento , Humanos , Mandíbula , Maxilar
4.
Dental Press J Orthod ; 25(2): 86-102, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32490929

RESUMEN

INTRODUCTION: A significant increase in the number of adults in search of orthodontic treatment has raised a new challenge for orthodontists: the need to interact with other specialties to achieve excellent results, particularly when dealing with smile aesthetics and facial balance. Several factors should be considered to respond to their demand: adequate tooth leveling and alignment, individual tooth proportions between adjacent teeth and their contralateral teeth, shape and natural appearance of each tooth and gingival architecture, which should all be in agreement with facial harmony. Maxillary or mandibular incisors congenitally missing or lost due to caries or trauma and tooth-size discrepancies (Bolton) are some of the important aesthetic challenges for an integrated orthodontic treatment. OBJECTIVES: This study describes cases that illustrate the clinical challenges of treating the anterior area, as well as the multidisciplinary strategies required for their resolution. CONCLUSION: The increasingly frequent multidisciplinary orthodontic treatments of complex cases seem to effectively maximize aesthetic and functional results using a combination of procedures conducted by specialists in related areas, such as Surgery, Prosthetics, Implantology, Restorative Dentistry and Periodontics.


Asunto(s)
Estética Dental , Incisivo , Adulto , Humanos , Maxilar , Ortodoncistas , Sonrisa
5.
Compend Contin Educ Dent ; 41(6): 331-335, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32551715

RESUMEN

This case series demonstrates internal maxillary sinus elevation and placement of 37 posterior implants in 34 private practice patients using sequential motorized expander burs exclusively to infracture the sinus border and embed bone graft material (allograft or xenograft) for vertical augmentation. With this technique, manual osteotome/malleting was completely avoided, improving surgical control and the patient experience. Sinus borders were lifted by a mean of 3.92 mm in ridges that had an average residual height of 7.52 mm. All implants achieved high insertion torque values (≥90 Ncm), obtained primary stability, and were successfully restored without complications. Anecdotally, the type of bone graft used did not appear to influence the outcome.


Asunto(s)
Implantes Dentales , Elevación del Piso del Seno Maxilar , Trasplante Óseo , Implantación Dental Endoósea , Humanos , Maxilar/cirugía , Seno Maxilar/cirugía , Osteotomía , Torque
6.
J Contemp Dent Pract ; 21(3): 326-336, 2020 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-32434983

RESUMEN

AIM: This study aimed to overview and collect the current trends and techniques in managing maxillary impacted canines by retrieving recent literature, in a chronological manner from the prevention to the very late stages of treatment in adults. BACKGROUND: We performed a review on the recent literature regarding the current trends on the management of impacted canines. We have researched various types of available articles such as clinical trials and case presentations, meta- and systematic analyses, and literature reviews focusing on clinical management of impacted canines and their outcome evaluations. We adhered to those articles published within the last decade with a focus on treatment planning for impacted and displaced canines. REVIEW RESULTS: Depending on the diagnosis and its timing of it, a maxillary impacted canine can be managed by either prevention or interception, surgical opening followed by autonomous eruption or orthodontically traction, autotransplantation, and at last by removal and space closure. These techniques are elaborated one by one according to the age and severity of the diagnosis. CONCLUSION: Impaction of the canines is a manageable abnormality which is highly dependent on the timing and localization of the displaced tooth. Early detection will give the upper hand to orthodontists to engage by either prevention through extraction of deciduous canines or intercepting via assistant devices to create more space. According to the clinical situation, open or closed surgical uncovering might be required to bond an attachment. However, generally, those techniques did not show any significant clinical distinction in the outcome assessments. CLINICAL SIGNIFICANCE: These approaches are highly technique sensitive and require collaborations with other specialties. Proper diagnosis and prognosis assessment are necessary before making any decision to bring an impacted canine in alignment.


Asunto(s)
Maxilar , Diente Impactado , Adulto , Diente Canino , Humanos , Ortodoncistas , Erupción Dental
7.
Indian J Dent Res ; 31(2): 175-179, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436893

RESUMEN

Aims: To calculate the relative distance between the incisive canal and maxillary central incisors using cone beam computed tomography (CBCT) and utilize the results in treatment planning in a clinical setting. Methods and Materials: A retrospective study was conducted on CBCT taken for other purposes in the Oral and Maxillofacial Radiology Department. All the quantitative measurements were performed between the incisive canal and both maxillary central incisors using CBCT on 61 subjects. The anterior-posterior measurements were taken on both sides and the average of both values was considered for the statistical analysis. All the linear measurements were performed on the axial plane at three different vertical reference points located on the sagittal plane. Statistical Analysis: The interexaminer reliability was tested by interclass correlation coefficient using two-way mixed and absolute agreement model. The comparison of linear measurement among each level was done by "Repeated measure ANOVA" and contrast method was used for pair-wise comparison when repeated measure analysis of variance (ANOVA) was significant. Results: The average anterior-posterior distance between the maxillary central incisor roots and the incisive canal measured was approximately 5-6 mm. The incisive canal width increases from the root apex level of maxillary central incisors (P3) to the oral opening level of the incisive canal (P1). Conclusions: The results of our study could be helpful in a clinical setting requires significant retraction of maxillary incisors or implant placement in maxillary anterior region.


Asunto(s)
Incisivo , Maxilar , Tomografía Computarizada de Haz Cónico , Reproducibilidad de los Resultados , Estudios Retrospectivos
8.
Indian J Dent Res ; 31(2): 203-208, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436898

RESUMEN

Context: The ability of implant dentistry to be a successful alternative for edentulous patients has increased in the last decade. Clinical features such as osseointegration and stability, in addition to the endurance of the integration urged the researchers towards a better understanding of the design parameters that control long term success of the implants. It is therefore necessary to quantify the effect of changing implant design parameters on interface stress distribution within the maxilla bone. Methods and Materials: A 3D-finite element study was conducted to investigate the effect of changing implant shape parameters (implant body design and implant thread depth) on stress distribution while insertion of the implant in two different regions of maxilla bone (anterior (type III bone) and posterior (type IV bone)). A 3D-CAD geometry of implant-maxilla bone was created through importing digitally visualized CT skull images of a human adult, and then converted into a workable solid body through using a collection of engineering software. Tapered and cylindrical implant models with three different implant V-shaped thread depths (0.25 mm, 0.35 mm, 0.45 mm) were threaded into maxilla bone to investigate the design parameters effect on the final stress status. The proposed implant was of commercial dimensions of 10 mm length and 4 mm in diameter. A vertical static load of 250N was directly applied to the center of the suprastructure of the implant for each model. Results: Evaluations were performed for stress distribution patterns and maximum equivalent Von Mises (EQV) stresses for implants in two regions of maxilla bone under 250N vertical static loading. The obtained results throughout this work showed that, for all models, the highest stresses were located at the crestal cortical bone around the implant neck. The von-Mises stress distribution patterns at different models were similar and higher peak von-Mises stresses of cortical bone were seen in tapered implant body compared to cylinder body in all models. Conclusions: Within the restrictions of the current model, the results obtained can be applied clinically to select properly both implant thread depth and body shape design for a foreseeable success of implant therapy.


Asunto(s)
Implantes Dentales , Maxilar , Fenómenos Biomecánicos , Simulación por Computador , Diseño de Prótesis Dental , Análisis del Estrés Dental , Análisis de Elementos Finitos , Humanos , Programas Informáticos , Estrés Mecánico
9.
Indian J Dent Res ; 31(2): 318-322, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436916

RESUMEN

The sequelae of chronic edentulous space is the supraeruption of the opposing teeth which hinders prosthodontic replacement. Molar intrusion of overerupted teeth can be done using miniscrew implants which serves as a promising technique, especially in adult patients. This case report highlights pre-prosthodontic therapy by pure molar intrusion using Temporary Anchorage Device (TAD) in an adult patient seeking prosthesis to enhance chewing efficiency.


Asunto(s)
Implantes Dentales , Métodos de Anclaje en Ortodoncia , Adulto , Humanos , Maxilar , Diente Molar , Diseño de Aparato Ortodóncico , Prostodoncia , Técnicas de Movimiento Dental
10.
Indian J Dent Res ; 31(2): 331-333, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436919

RESUMEN

In the treatment of mid-facial fractures circum-zygomatic suspension wiring is one of the treatment modality. Earlier zygomatic awls were used to pass wire, which used to cause conspicuous trauma. In the present case we have used 16 gauge lumbar puncture needle for the suspension wiring for Lefort 1 fracture, which is inconspicuous as compared to an awl. The needle was passed in close proximity to bone to prevent soft tissue impaction between the wire and bone as it might lead to the necrosis of soft tissue, and the wire was twisted around the maxillary arch bar. The fragments were stable and occlusion was maintained. Six weeks post-operatively the bone healing was satisfactory, and the wires and arch bar were removed.


Asunto(s)
Fracturas Maxilares , Fracturas Cigomáticas , Hilos Ortopédicos , Fijación Interna de Fracturas , Humanos , Maxilar , Punción Espinal
11.
Prog Orthod ; 21(1): 13, 2020 May 18.
Artículo en Inglés | MEDLINE | ID: mdl-32419086

RESUMEN

BACKGROUND: There is relatively little appreciation of the changes in maxillary-mandibular relationships occurring during adolescence among subjects with normal and increased overjet. The aim of this study was to assess differences in changes in maxillo-mandibular relationships during the adolescent growth period based on the presence of a normal (< 4 mm) or increased (> 4 mm) overjet in childhood. Our hypothesis was that there is no difference in the change of the A point, nasion, B point (ANB) angle during growth between these two overjet groups. Lateral cephalograms were obtained from 65 subjects taken from the American Association of Orthodontists Foundation (AAOF) Craniofacial Growth Legacy Collections Project. Cephalograms were obtained at ages 7-10 (T0) and 14-17 (T1) with allocation into two groups based on baseline overjet (> 4 mm: group 1, 2-4 mm: group 2). Random effects linear regression was used to account for multiple within -patient measurements with dependent variables including antero-posterior skeletal pattern (based on sella, nasion, A point (SNA); sella, nasion, B point (SNB); and ANB angles). RESULTS: We included a similar number of males (n = 34; 52.3%) and females (n = 31; 47.7%). The mean ANB was higher at baseline in group 1 (5.42, SD 2.16°) than in group 2 (3.08, SD 1.91°). The hypothesis was rejected as the ANB angle reduced by 1.92° more in the larger overjet group with the association being statistically significant after accounting for age and gender (P < 0.001; 95% CI 1.06 to 2.77). No significant gender-related effect (P = 0.624; 95% CI - 0.637 to 1.07) was observed overall. However, there was no significant increase in SNA angle in the > 4 mm overjet group compared to the 2-4 mm group (0.857°, P = 0.271; 95% CI - 0.669 to 2.383). The SNB angle increased by 1.15° more in the higher overjet group but there was only weak evidence of an association (P = 0.086; 95% CI - 2.464 to 0.164). CONCLUSIONS: A slight straightening of the facial profile was observed in both groups with a statistically significant greater reduction in ANB arising in the group with larger baseline overjet. This translated into a marginal reduction in the overjet in this group.


Asunto(s)
Maloclusión de Angle Clase II , Sobremordida , Adolescente , Cefalometría , Niño , Femenino , Humanos , Masculino , Mandíbula , Maxilar
12.
Int J Oral Implantol (Berl) ; 13(2): 109-121, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32424379

RESUMEN

AIMS: To evaluate whether piezoelectric bone surgery (PBS) for lateral maxillary sinus floor elevation reduces risk of intraoperative complications, requires prolonged surgical time and improves the survival rate of dental implants in comparison with conventional rotary instruments. MATERIALS AND METHODS: This meta-analysis followed PRISMA guidelines and was registered in the PROSPERO database (CRD42019122972). The PubMed, Embase, Scopus and Open Grey databases were screened for articles published from 1 January 1990 to 31 December 2018. The selection criteria included randomised controlled trials (RCTs) and case-control studies (CCTs) comparing PBS with rotary instruments in lateral sinus augmentation and reporting intraoperative and postoperative outcomes (e.g. sinus membrane perforations, surgical time and implant failure rate). The risk of bias assessment was performed using the Cochrane Collaboration's tool for RCTs. A meta-analysis was performed, and the power of the meta-analytic findings was assessed via trial sequential analysis (TSA). RESULTS: Four RCTs met the inclusion criteria and were included in the review. The meta-analysis showed that, although a lower incidence of membrane tearing occurred when using PBS, the difference between the two groups was not significant. However, the power of evidence for this outcome, as determined by the TSA, was weak. Moreover, there was moderate evidence suggesting that PBS prolongs the surgery duration (mean difference of 3.43 minutes), whilst insufficient data was present to assess if PBS improves the survival rate of implants inserted in augmented sinuses. CONCLUSIONS: The power of the evidence was too weak to confirm the above-mentioned findings and further well-designed randomised clinical trials are needed to draw definitive conclusions.


Asunto(s)
Implantes Dentales , Elevación del Piso del Seno Maxilar , Senos Transversos , Humanos , Maxilar , Seno Maxilar
13.
J Evid Based Dent Pract ; 20(1): 101410, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32381412

RESUMEN

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Implants in the Posterior Maxilla: Open Sinus Lift Versus Conventional Implant Placement. A Systematic Review. Romero-Millán J, Alzcorbe-Vicente J, Peñarrocha-Diago M, Galindo-Moreno P, Canullo L, Peñarrocha-Oltra D. Int J Oral Maxillofac Implants 2019; 34(4):e65-e76. SOURCE OF FUNDING: Information not available. TYPE OF STUDY/DESIGN: Systematic review.


Asunto(s)
Implantes Dentales , Implantación Dental Endoósea , Fracaso de la Restauración Dental , Humanos , Maxilar/cirugía
14.
Prog Orthod ; 21(1): 11, 2020 May 04.
Artículo en Inglés | MEDLINE | ID: mdl-32363550

RESUMEN

BACKGROUND: To compare dentoskeletal changes produced by the maxillary splint headgear and cervical headgear appliance during the early phase of Class II treatment, specially the initial overjet and upper incisors position. SUBJECTS AND METHODS: In this retrospective study, 28 Class II patients treated with the maxillary splint headgear (MSG, mean age 10.1 ± 1.9 years) and 28 Class II patients treated with cervical headgear (CHG, mean age 9.5 ± 1.9 years) were evaluated before and after treatment. Statistical comparisons between the two groups for cephalometric measurements at T1 and for T2-T1 changes were performed by means of independent sample t tests. RESULTS: The MSG showed a significantly greater reduction of the overjet in comparison to the CHG (- 2.4 mm and - 0.7 mm, respectively) and a significantly greater maxillary incisor uprighting (- 1.8 mm and 0.4 mm, respectively). In the MSG, overjet correction was due mainly to mandibular advancement (3.5 mm), while the correction of molar relationship (3.9 mm) was 64% skeletal and 36% dentoalveolar. In the CHG, the overjet correction was also more skeletal, due to mandibular growth (1.8 mm), while correction of molar relationship (3.5 mm) was 63% dentoalveolar and 37% skeletal. CONCLUSIONS: Both groups showed favorable skeletal mandibular changes, which was more significant in the MSG. Regarding tooth movement, the maxillary splint headgear was more effective in uprighting upper incisors and reducing the overjet than cervical headgear appliance.


Asunto(s)
Aparatos de Tracción Extraoral , Maloclusión de Angle Clase II , Cefalometría , Niño , Humanos , Maxilar , Estudios Retrospectivos , Férulas (Fijadores) , Técnicas de Movimiento Dental
15.
J Contemp Dent Pract ; 21(2): 207-210, 2020 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-32381829

RESUMEN

AIM: The aim of the study was to quantify the specific spatial displacement of gingival zenith (GZ) and determine a representative value for the interdental papilla height as a percentage ratio of clinical crown length (CL), as measured from GZ in the maxillary anterior dentition. MATERIALS AND METHODS: A total of 100 subjects and 1,200 interdental papillae were included. Eighty percent of the population presented with the gingival margin of lateral incisor (LI) teeth positioned coronally to the GZ of the ipsilateral canine (C) and central incisor (CI). RESULTS: No significant difference was found between mesial and distal papilla proportion (DPP) of maxillary incisor groups. In the C group, numerical values showed higher DPP. CONCLUSION: The data achieved provide the ideal numerical values for prosthetic, restorative, periodontal, implant, postorthodontic, and esthetic treatment outcomes. CLINICAL SIGNIFICANCE: The study describes the importance of quantifying the ideal numerical values for prosthetic, restorative, periodontal, implant, postorthodontic, and esthetic treatment outcomes. The readers should understand to quantify the specific spatial displacement of GZ and determine a representative value for the interdental papilla height as a percentage ratio of clinical CL, as measured from GZ in the maxillary anterior dentition.


Asunto(s)
Estética Dental , Encía , Estética , Incisivo , Maxilar
16.
J Contemp Dent Pract ; 21(2): 211-214, 2020 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-32381830

RESUMEN

AIM: The aim of the present study was to present a case of maxillary aspergillosis with unusual clinical presentation and imaging findings. BACKGROUND: The range of lesions and conditions that affect the maxillary sinus is wide and vast. This necessitates a dynamic multidisciplinary approach for proper diagnosis and effective management. CASE DESCRIPTION: We present an unusual case of maxillary aspergillosis that mimicked apical periodontitis and was most consistent with lymphoma from the diagnostic imaging perspective. Histopathology, however, established the correct diagnosis; appropriate management commenced promptly. CONCLUSION: It is imperative that maxillary aspergillosis be diagnosed and managed properly and promptly to improve prognosis. Advanced imaging is required, but it plays an adjunct role to histopathology. Long-term follow-up is also necessary to ensure complete resolution of the infection. CLINICAL SIGNIFICANCE: Correlating clinical and imaging findings is a crucial step and any inconsistencies should be resolved promptly so as not to delay adequate management. Histopathology often serves to dispute any inconsistencies and allows the establishment of a proper diagnosis.


Asunto(s)
Aspergilosis , Sinusitis Maxilar , Periodontitis Periapical , Humanos , Maxilar , Seno Maxilar
17.
Compend Contin Educ Dent ; 41(5): e1-e10, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32369380

RESUMEN

BACKGROUND: A retrospective comparative radiographic and clinical studywas performed to evaluate primary stability, bone volume, and esthetic outcomes of tapered (T) implants (control group) versus inverted body-shift (INV) implants (test group). METHODS: A total of 42 platform-switched implants, 21 T and 21 INV, were used to replace nonrestorable teeth in maxillary central incisor post-extraction sockets. Implant primary stability and insertion torque values in addition to radiographic differences in labial plate dimension, tooth-to-implant distance, and marginal bone levels were correlated with clinical outcomes using the pink esthetic score (PES). RESULTS: Statistically significant differences (P ≤ .05) were found between groups, with T implants having not only lower primary stability at immediate implant placement than INV implants but also less circumferential bone volume at recall. Consequently, lower PESs were seen in the T implant group that equated to an increased frequency of midfacial recession, tissue discoloration, and papilla loss. CONCLUSIONS: INV implants, which feature a unique macro hybrid design, may offer advantages over T implants in maxillary anterior post-extraction sockets with regard to achieving both higher primary stability and superior esthetic outcomes.


Asunto(s)
Implantes Dentales de Diente Único , Implantes Dentales , Carga Inmediata del Implante Dental , Estética Dental , Humanos , Maxilar , Estudios Retrospectivos , Extracción Dental , Alveolo Dental , Resultado del Tratamiento
18.
Compend Contin Educ Dent ; 41(5): 278-283, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32369385

RESUMEN

Inadequate alveolar bone height/volume and sinus anatomy can complicate the predictable placement of conventional implants and subsequent restoration in posterior maxillary sites. A variety of sinus lift and vertical bone height augmentation materials and techniques have been utilized for this purpose; however, generally they are clinically challenging, demand well-trained surgical proficiency, and require the use of multiple armamentaria. Simultaneously, clinicians must meticulously handle the sinus membrane to achieve elevation without perforation, attain successful bone grafting, and ensure predictable implant osseointegration. The hydraulic sinus condensing (HSC) technique via the osteotomy site is designed to be less invasive than conventional sinus lift techniques, reduce trauma to patients, improve implant osseointegration into grafted alveolar bone, prevent sinus membrane perforation, and enhance the overall efficiency of the associated surgical process. This article briefly reviews the evolution of sinus lift and posterior maxillary implant insertion procedures and presents a case in which the HSC technique and a uniquely designed sinus implant were used.


Asunto(s)
Implantes Dentales , Elevación del Piso del Seno Maxilar , Implantación Dental Endoósea , Humanos , Maxilar , Seno Maxilar , Oseointegración
19.
J Contemp Dent Pract ; 21(3): 317-321, 2020 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-32434981

RESUMEN

AIM: Evaluating the association of maxillary sinus dimensions and the maxillary arch dimensions may help to understand the interrelationship between the maxillary sinus and the anatomical facial features. The study aimed to investigate the correlation of the 2-D and 3-D maxillary sinus dimensions with the linear measurement of the maxillary arch width (MAW) in adult individuals. MATERIALS AND METHODS: A cross-sectional observational study was conducted using 54 cone-beam computed tomography scans obtained from patients starting their treatment in dental clinics of dental college, Jazan University. Maximal vertical diameter (maximal height) of the maxillary sinus (MSH), maximal horizontal diameter (maximal width) of the maxillary sinus (MSW), maximal anteroposterior diameter (maximal length) of the maxillary sinus (MSL), MAW, and maxillary sinus volume (MSV) were measured and recorded using 3-D Slicer software. The Spearman's rank correlation coefficient (rho-ρ) was used to analyze the strength and type of the relationship between variables. RESULTS: In both males and females, moderate to strong correlation (ρ range between 0.65 and 0.80) was observed between MSV for all linear measurements of the maxillary sinuses on both sides. The maxillary sinus length showed the weakest correlation with MAW in both genders Conclusion: The relationship of MAW with MSV on both sides shows a stronger correlation than its relationship with all 2-D linear measurements of maxillary sinuses. CLINICAL SIGNIFICANCE: The clinician should take into consideration the structure and function of the maxillary sinus when treating the midfacial structures for trauma or congenital malformations.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Seno Maxilar , Adulto , Estudios Transversales , Cara , Femenino , Humanos , Masculino , Maxilar
20.
Spec Care Dentist ; 40(3): 315-319, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32396249

RESUMEN

INTRODUCTION: A definitive maxillary obturator prosthesis can be used to rehabilitate a maxillary defect with the aim of improving speech, deglutition, and elimination of oronasal regurgitation. The aims of this study were (1) to determine the time required to fabricate a definitive maxillary obturator prosthesis and (2) to compare the fabrication and follow-up times between a patient's first and second definitive maxillary obturator prosthesis. MATERIALS AND METHODS: A retrospective review was completed of patients that had maxillary definitive obturators fabricated following head and neck surgery from 2002 to 2018 (n = 173). Demographics, clinical data, date of surgery, start date of fabrication, follow-up dates, and prosthesis follow-up data were collected. RESULTS: The median time to delivery of the patient's first definitive maxillary obturator prosthesis from the date of surgery was 7.7 months for nonradiated patients and 9.6 months for radiated patients (P ≤ .05). Additionally, there was a significant difference in the median number of appointments to fabricate the 1st definitive maxillary obturator prosthesis as compared to the 2nd prosthesis (6 vs 5; P ≤ .05). CONCLUSION: Fabrication timelines differed based on history of radiotherapy and patient experience. This data is helpful to set expectations for patients and practitioners regarding the process for prosthesis fabrication and follow-up.


Asunto(s)
Neoplasias Maxilares , Obturadores Palatinos , Estudios de Seguimiento , Humanos , Maxilar , Estudios Retrospectivos
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