Objective: The I-gel device and endotracheal tube are used for advanced airway management during cardiopulmonary resuscitation (CPR). This study compares differences in the ventilation volume according to the fixation methods (tape and band) of I-gel using a simulation manikin. Methods: I-gel was placed in an advanced life support simulator and fixed with either tape or band fixation, and an endotracheal tube was inserted using an endotracheal tube holder (AnchorFast). CPR was performed according to the 2020 Korean CPR guidelines, using a mechanical chest compression device (LUCAS) and an adult bag. CPR was performed for 30 minutes. Positional shifts of the I-gel and endotracheal tube and differences in the ventilation volume on the simulation manikin were subsequently measured. Five trials were carried out in each setting. Statistical analysis was carried out using SPSS version 27.0. A P-value <0.05 is considered significant. Results: The following positional shifts were obtained after 30 minutes of CPR: I-gel tape fixation, 4.96±0.72 mm; I-gel band fixation, no change; endotracheal tube holder, no change. The mean ventilation volumes obtained were 504.43± 14.42, 536.86±5.56, and 528.38±8.81 mL, respectively. Conclusion Our results indicate that the use of I-gel is as effective as an endotracheal tube for initial airway maintenance during CPR in the hospital. We recommend using an elastic band-type fixation device for the fixation method.

PURPOSE: The aim of this review was to analyze the evaluation criteria on mandibular implant overdentures through a systematic review and suggest standardized evaluation criteria. MATERIALS AND METHODS: A systematic literature search was conducted by PubMed search strategy and hand-searching of relevant journals from included studies considering inclusion and exclusion criteria. Randomized clinical trials (RCT) and clinical trial studies comparing attachment systems on mandibular implant overdentures until December, 2011 were selected. Twenty nine studies were finally selected and the data about evaluation methods were collected. RESULTS: Evaluation criteria could be classified into 4 groups (implant survival, peri-implant tissue evaluation, prosthetic evaluation, and patient satisfaction). Among 29 studies, 21 studies presented implant survival rate, while any studies reporting implant failure did not present cumulative implant survival rate. Seventeen studies evaluating peri-implant tissue status presented following items as evaluation criteria; marginal bone level (14), plaque Index (13), probing depth (8), bleeding index (8), attachment gingiva level (8), gingival index (6), amount of keratinized gingiva (1). Eighteen studies evaluating prosthetic maintenance and complication also presented following items as evaluation criteria; loose matrix (17), female detachment (15), denture fracture (15), denture relining (14), abutment fracture (14), abutment screw loosening (11), and occlusal adjustment (9). Atypical questionnaire (9), Visual analog scales (VAS) (4), and Oral Health Impact Profile (OHIP) (1) were used as the format of criteria to evaluate patients satisfaction in 14 studies. CONCLUSION: For evaluation of implant overdenture, it is necessary to include cumulative survival rate for implant evaluation. It is suggested that peri-implant tissue evaluation criteria include marginal bone level, plaque index, bleeding index, probing depth, and attached gingiva level. It is also suggested that prosthetic evaluation criteria include loose matrix, female detachment, denture fracture, denture relining, abutment fracture, abutment screw loosening, and occlusal adjustment. Finally standardized criteria like OHIP-EDENT or VAS are required for patient satisfaction.
Dental Implants ; Denture Rebasing ; Denture, Overlay* ; Dentures ; Female ; Gingiva ; Hemorrhage ; Humans ; Mandibular Prosthesis ; Occlusal Adjustment ; Oral Health ; Patient Satisfaction ; Periodontal Index ; Survival Rate ; Visual Analog Scale ; Surveys and Questionnaires

This case report introduces a 74-year-old male patient who visited retention deficiency of the mandibular implant overdenture, which was fabricated 20 years ago.When the existing dentures were used, the vertical dimension was reduced, the maxillary complete denture lacked lip support and retention, and the mandibular overdenture lacked clip retention due to damage to the bar attachment. After removing the damaged bar attachment, it was replaced with a ball attachment, and impressions were taken using the DENTCA TM Tray and then the vertical dimension was measured. The gothic arch tracing was performed to record the centric relation. Obtained impressions were scanned and the shape of final dentures was designed using software and try-in dentures were fabricated using 3D printer.After evaluating the occlusal plane, occlusal relationship, facial shape, and pronunciation using the try-in dentures, the bite registration was recorded, and the final denture was manufactured based on this. The inner surface of the denture was adjusted and bilateral balanced occlusion was formed, and the housing was connected to the mandibular denture by a direct method. This case reports have shown satisfactory resultin recovering improved retention and esthetic outcome by increasing the vertical dimension and the lip support using CAD-CAM technique and the ball attachment.

Although the proportion of edentulous patients is declining, the aging population has resulted in an increase in their absolute numbers. Conventional complete dentures can partially restore oral function but have significant limitations such as low retention and relatively poor masticatory ability. Therefore, implant overdentures have been proposed as an alternative, offering enhanced functionality, higher patient satisfaction, and cost-effectiveness compared to fixed implants. In this case, a 74-year-old female patient presented with complaints about her existing implant overdenture, fabricated in 2010, which frequently dislodged and was aesthetically unpleasing. Clinical examination revealed worn attachments and artificial teeth, as well as insufficient upper lip support. It was decided to remake the implant overdentures utilizing the existing implants. During the fabrication, the patient continued to use her previous denture. After evaluating the occlusal relationships, facial form, and vertical dimension, the new overdentures were fabricated. The newly created implant overdentures showed satisfactory aesthetic and functional results, and the patient was satisfied.

Although the proportion of edentulous patients is declining, the aging population has resulted in an increase in their absolute numbers. Conventional complete dentures can partially restore oral function but have significant limitations such as low retention and relatively poor masticatory ability. Therefore, implant overdentures have been proposed as an alternative, offering enhanced functionality, higher patient satisfaction, and cost-effectiveness compared to fixed implants. In this case, a 74-year-old female patient presented with complaints about her existing implant overdenture, fabricated in 2010, which frequently dislodged and was aesthetically unpleasing. Clinical examination revealed worn attachments and artificial teeth, as well as insufficient upper lip support. It was decided to remake the implant overdentures utilizing the existing implants. During the fabrication, the patient continued to use her previous denture. After evaluating the occlusal relationships, facial form, and vertical dimension, the new overdentures were fabricated. The newly created implant overdentures showed satisfactory aesthetic and functional results, and the patient was satisfied.

Although the proportion of edentulous patients is declining, the aging population has resulted in an increase in their absolute numbers. Conventional complete dentures can partially restore oral function but have significant limitations such as low retention and relatively poor masticatory ability. Therefore, implant overdentures have been proposed as an alternative, offering enhanced functionality, higher patient satisfaction, and cost-effectiveness compared to fixed implants. In this case, a 74-year-old female patient presented with complaints about her existing implant overdenture, fabricated in 2010, which frequently dislodged and was aesthetically unpleasing. Clinical examination revealed worn attachments and artificial teeth, as well as insufficient upper lip support. It was decided to remake the implant overdentures utilizing the existing implants. During the fabrication, the patient continued to use her previous denture. After evaluating the occlusal relationships, facial form, and vertical dimension, the new overdentures were fabricated. The newly created implant overdentures showed satisfactory aesthetic and functional results, and the patient was satisfied.

Although the proportion of edentulous patients is declining, the aging population has resulted in an increase in their absolute numbers. Conventional complete dentures can partially restore oral function but have significant limitations such as low retention and relatively poor masticatory ability. Therefore, implant overdentures have been proposed as an alternative, offering enhanced functionality, higher patient satisfaction, and cost-effectiveness compared to fixed implants. In this case, a 74-year-old female patient presented with complaints about her existing implant overdenture, fabricated in 2010, which frequently dislodged and was aesthetically unpleasing. Clinical examination revealed worn attachments and artificial teeth, as well as insufficient upper lip support. It was decided to remake the implant overdentures utilizing the existing implants. During the fabrication, the patient continued to use her previous denture. After evaluating the occlusal relationships, facial form, and vertical dimension, the new overdentures were fabricated. The newly created implant overdentures showed satisfactory aesthetic and functional results, and the patient was satisfied.

Although the proportion of edentulous patients is declining, the aging population has resulted in an increase in their absolute numbers. Conventional complete dentures can partially restore oral function but have significant limitations such as low retention and relatively poor masticatory ability. Therefore, implant overdentures have been proposed as an alternative, offering enhanced functionality, higher patient satisfaction, and cost-effectiveness compared to fixed implants. In this case, a 74-year-old female patient presented with complaints about her existing implant overdenture, fabricated in 2010, which frequently dislodged and was aesthetically unpleasing. Clinical examination revealed worn attachments and artificial teeth, as well as insufficient upper lip support. It was decided to remake the implant overdentures utilizing the existing implants. During the fabrication, the patient continued to use her previous denture. After evaluating the occlusal relationships, facial form, and vertical dimension, the new overdentures were fabricated. The newly created implant overdentures showed satisfactory aesthetic and functional results, and the patient was satisfied.

As a high-performance polymer, Polyetherketoneketone (PEKK) has good biocompatibility and excellent physical properties and is used in several areas, including dentistry. Many successful cases of implant-supported fixed prostheses with a PEKK framework have been reported; however, a long-term observation of the reported cases and discussion of complications are not available. In this case report, we present three cases of implant-supported fixed prostheses with a PEKK framework veneered with composite resin, lithium disilicate crown, and high-impact polymethyl methacrylate (PMMA), and discuss their 6-year follow-up results.

PURPOSE: The object of the present study was to evaluate the shear bonding strength of composite to PEKK by applying several methods of surface treatment associated with various bonding materials. MATERIALS AND METHODS: One hundred and fifty PEKK specimens were assigned randomly to fifteen groups (n = 10) with the combination of three different surface treatments (95% sulfuric acid etching, airborne abrasion with 50 µm alumina, and airborne abrasion with 110 µm silica-coating alumina) and five different bonding materials (Luxatemp Glaze & Bond, Visio.link, All-Bond Universal, Single Bond Universal, and Monobond Plus with Heliobond). After surface treatment, surface roughness and contact angles were examined. Topography modifications after surface treatment were assessed with scanning electron microscopy. Resin composite was mounted on each specimen and then subjected to shear bond strength (SBS) test. SBS data were analyzed statistically using two-way ANOVA, and post-hoc Tukey's test (P<.05). RESULTS: Regardless of bonding materials, mechanical surface treatment groups yielded significantly higher shear bonding strength values than chemical surface treatment groups. Unlike other adhesives, MDP and silane containing self-etching universal adhesive (Single Bond Universal) showed an effective shear bonding strength regardless of surface treatment method. CONCLUSION: Mechanical surface treatment behaves better in terms of PEKK bonding. In addition, self-etching universal adhesive (Single Bond Universal) can be an alternative bonding material to PEKK irrespective of surface treatment method.
Adhesives ; Aluminum Oxide ; Dental Bonding ; Methods ; Microscopy, Electron, Scanning ; Polymers* ; Sulfur