- Biomechanical role of posterior cruciate ligament in total knee arthroplasty: A finite element analysis. [Journal Article]Comput Methods Programs Biomed 2019; 183:105109CM
- CONCLUSIONS: The results have implications not only for understanding the stresses in the prosthetic knee model under squat movement but also for providing comprehensive information about the effects of variations in the PCL stiffness and balancing on the induced stresses of the PCL and tibial insert.
- Use of Cervical Disc Arthroplasty to Treat Non-Contiguous Cervical Disc Herniations: A Case Report. [Journal Article]World Neurosurg 2019WN
- CONCLUSIONS: This approach serves to preserve cervical motion, spinal stability, and lordosis across all three levels, thus demonstrating that it is a viable alternative to a multi-level anterior cervical interbody fusion.
- De Garengeot's hernia: Case report and literature review. [Journal Article]Int J Surg Case Rep 2019; 64:58-61IJ
- CONCLUSIONS: This type of hernia is often unexpected and its preoperative diagnosis is difficult to perform. In most cases the clinical picture is indistinguishable from a common incarcerated hernia. Contrast-enhanced CT is the most useful complementary test, although it is not as accurate as desirable, so the diagnosis is frequently found intraoperatively. There is a wide variety of surgical options and there is no consensus on the most appropriate one. The preperitoneal approach enables the performance of an appendectomy and subsequent hernia reparation. The use of prosthesis should be considered if there are no signs of perforation or abscess.De Garengeot's hernia is a very rare entity. The diagnosis and subsequent surgical treatment must be early to prevent the disease progression. The preperitoneal approach should be considered as the first choice technique, as it allows the exploration of the herniated sac and the performance of surgical procedures on its content.
- Influence of shading technique on mechanical fatigue performance and optical properties of a 4Y-TZP ceramic for monolithic restorations. [Journal Article]J Mech Behav Biomed Mater 2019; 102:103457JM
- This study aimed to evaluate the effect of shading procedures on the fatigue performance and optical properties of an yttria-stabilized tetragonal zirconia polycrystal ceramic (4Y-TZP - stabilized by 4 mol% Y2O3). Disc-shaped specimens were produced at pre-sintered stage and randomly allocated into 5 groups (n=15) considering the shading technique: Ctrl (no pigmentation); Brush 1× and Brush 3× (b…
This study aimed to evaluate the effect of shading procedures on the fatigue performance and optical properties of an yttria-stabilized tetragonal zirconia polycrystal ceramic (4Y-TZP - stabilized by 4 mol% Y2O3). Disc-shaped specimens were produced at pre-sintered stage and randomly allocated into 5 groups (n=15) considering the shading technique: Ctrl (no pigmentation); Brush 1× and Brush 3× (brushing on 1 or 3 applications, respectively); Immer 2min and Immer 4min (immersion for 2 or 4 min, respectively). Following each pigment application, the specimens were dried in accordance with the manufacturers' guidelines (15 min in a stove at 70 °C) and sintered in a specific furnace. Biaxial flexural fatigue test followed a step-stress approach (initial strength: 200 MPa; step-size: 25 MPa; 10.000 cycles/step; frequency: 20 Hz). Optical measurements were conducted in a spectrophotometer following the CIEDE2000 parameters. Roughness, topography, crystalline grain size, crystalline phase content and fractography analysis were also performed. The flexural fatigue strength (FFS) and the number of cycles to fracture (CFF) were statistically affected by pigmentation techniques (mean FFS in MPa/mean CFF): Ctrl (446.7/105,619) > Brush 1 × (436.7/102,854) ≥ Brush 3 × (405.0/89,962) ≥ Immer 2 min (395.0/85,103) ≥ Immer 4 min (383.3/81,382), although the exposure intensity (increase in number of applications or in application time) to the pigment had no effect (Brush 1 × = Brush 3 × ; Immer 2 min = Immer 4 min). Regarding optical properties, shading techniques similarly affected translucency and opalescence parameters, regardless of the exposure intensity to the pigment (Brush 1 × = Brush 3 × = Immer 2 min = Immer 4 min > Ctrl), whereas the exposure intensity to the pigment only promoted relevant alterations in the color change parameter (ΔE00) for the brushing technique (Brush 3 × > Brush 1 ×). No difference was observed in crystalline phase content, topographic pattern or roughness, although an increase in the zirconia grain size could be detected. Thus, the shading technique might affect the fatigue behavior and promote optical changes in a 4Y-TZP ceramic.
- 6 mm short and 11 mm long implants compared in the full-arch rehabilitation of the edentulous mandible: a 3-year multicenter randomised controlled trial. [Journal Article]Clin Oral Implants Res 2019CO
- CONCLUSIONS: 6 mm short implants may be a reliable option when used in the rehabilitation of total edentulous mandibles. These results need to be confirmed by longer follow-up data from well-designed randomised controlled clinical trials.
- Denture stomatitis associated with small-colony variants of Staphylococcus aureus: a case report. [Journal Article]BMC Oral Health 2019; 19(1):219BO
- CONCLUSIONS: This case demonstrated that oral cavity in denture wearers may be a reservoir of small-colony variants of S. aureus, besides C. albicans. The prevalence of these bacteria and their role in the pathogenesis of oral diseases are not understood. Due to problems with their detection and identification, the true prevalence of oral SCVs may be underestimated.
- Get out of trouble during redo surgery for false aneurysm of the ascending aorta. [Journal Article]Asian Cardiovasc Thorac Ann 2019; :218492319883528AC
- Impact of suture techniques for aortic valve replacement on prosthesis-patient mismatch. [Journal Article]Ann Thorac Surg 2019AT
- CONCLUSIONS: The interrupted non-pledget mattress suture offers complete supra-annular implantation, which reduces the incidence of PPM and resulting in better hemodynamic improvement after small-size AVR.
- Proposal and In-depth Analysis of Emergency Treatment Procedures for Removing Fractured Abutments in Implants with Tapped-in Connections: Case Report. [Journal Article]J Oral Implantol 2019JO
- In implant-supported prostheses, the most frequently reported mechanical complications after implant restoration are loosening or fracture of abutments or screws. Such complications have serious consequences, and the removal of fractured abutments or screws is difficult. There are various methods to remove fractured abutment screws in implants with screwed-in connections. However, no approach has…
In implant-supported prostheses, the most frequently reported mechanical complications after implant restoration are loosening or fracture of abutments or screws. Such complications have serious consequences, and the removal of fractured abutments or screws is difficult. There are various methods to remove fractured abutment screws in implants with screwed-in connections. However, no approach has been reported to retrieve solid abutments in implants with a locking-taper implant-abutment connection, which are rarely observed in clinical settings. This study presents the case of a 62-year-old male patient with a fractured abutment in an upper-right second premolar implant. Abutment fracture is a common mechanical complication after dental implantation. Parafunctional habits and occlusal overloading may generate excessive occlusal forces, which increase the risk of mechanical complications. This report presents a series of emergency procedures for removing a fractured solid abutment and fabricating a new prosthesis to restore the edentulous area. In this retrospective analysis, the author deeply considers the whole treatment, through which the deficiencies of the treatment are noted and corresponding future directions are discussed. This case report presents a convenient approach to remove a solid abutment in a sudden emergency, discusses the possible reasons for solid abutment fractures, designs a new rescue kit for easy retrieval of such abutments and summarizes a valid solution for removing fractured solid abutments.
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- Rehabilitation of unilateral mastectomy using a hollow breast prosthesis: A clinical case report. [Letter]J Cancer Res Ther 2019 Jul-Sep; 15(5):1181-1185JC
- The incidence of breast carcinoma is reportedly the second highest among all carcinomas in Indian women. Depending on the extent of resection, age, general health, and economic condition of the patient, various methods of breast reconstruction using surgery have been reported with success and a superior cosmesis. When the patient is unwilling to opt for surgical reconstruction due to various cons…
The incidence of breast carcinoma is reportedly the second highest among all carcinomas in Indian women. Depending on the extent of resection, age, general health, and economic condition of the patient, various methods of breast reconstruction using surgery have been reported with success and a superior cosmesis. When the patient is unwilling to opt for surgical reconstruction due to various constraints, an alternative technique must be employed. In such cases, nonsurgical prosthetic reconstruction using maxillofacial silicones is considered the only viable option. This prevents the need for a second surgery and rehabilitates the patient during the decision-making phase for considering a delayed reconstructive surgery. The prosthesis mimics the natural texture, feel, weight, and appearance as its natural counterpart enabling the patient to go about her routine social activities. This case report illustrates an indigenous method of rehabilitation of a unilateral mastectomy case using hollow breast form/prosthesis.