Πέμπτη 31 Μαρτίου 2022

At least 3 years of self-responsibility for periodontal care after 2 years of supportive periodontal therapy

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Abstract

Objectives

This study aimed to investigate the periodontal condition when patients became self-responsible for the continuation of periodontal care, after non-surgical periodontal therapy and 2 years of Supportive Periodontal Therapy (SPT).

Materials and methods

Fifty-seven patients completed a previous 2-year SPT study and were afterward advised to seek for dental assistance for maintenance care. After 4.2 ± 0.45 years of self-responsibility for periodontal care (SRPC), 27 patients could be re-examined of which 9 patients had followed the advice to turn to a dental professional for SPT care. Visible Plaque (VPI), Gingival Bleeding (GBI), Periodontal Probing Depth (PPD), Bleeding on probing (BOP), and Clinical Attachment Loss (CAL) were obtained from SPT study: before and after non-surgical treatment, and after 2 years of SPT. The same parameters were reassessed for the present study. General linear models for repeated measures were used for data analysis.

Results

At the end of the SRPC period, mean GBI, BOP, and PPD values (43.5%, 55.7%, 2.76 mm, respectively) were back to pre-treatment, whereas VPI (64.3%) and CAL (3.76 mm) became significantly higher. The percentage of sites with PPD ≥5 mm as well as sites with CAL ≥4 or ≥5 mm also returned to pre-treatment values. However, the percentage of sites with PPD ≥4 mm was still significantly lower compared to pre-treatment values but higher than after 2 years of SPT.

Conclusions

Self-responsibility for the continuation of periodontal care after professional treatment should be avoided.

Clinical relevance

Clinicians and specialists must be conscious of making all efforts to maintain the patient's frequent recalls.

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Key Issues in Use of Prophylactic Steroids to Prevent Hypocalcemia and Voice Dysfunction After Thyroidectomy—Reply

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In Reply We thank Ms Kane and colleagues for their feedback on our article.
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Evaluation of digital construction, production and intraoral position accuracy of novel 3D CAD/CAM titanium retainers

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Abstract

Objectives

New opportunities have arisen to manufacture three-dimensional computer-aided design/computer-aided manufacturing (3D CAD/CAM) retainers from titanium blocks by digital cutting technology. These novel technologies need to fulfill requirements regarding digital planning and position accuracy. The aim of the present study was to investigate the digital construction, the CAD/CAM production and the intraoral positioning accuracy of custom-manufactured novel 3D CAD/CAM titanium retainers.

Materials and methods

A total of 37 prime4me® RETAIN3R (Dentaurum, Ispringen, Germany) retainers were inserted to stabilize the upper anterior front teeth. Following insertion, an intraoral scan was used to record the position. The intraoral position was compared to the virtual setup using 3D superimposition software. Measurement points were evaluated in all three dimensions (horizontal, sagittal and vertical planes). Data were analyzed using Kruskal–Wallis test followed by Dunn's multiple comparison test.

Results

A total of 185 measurements were performed. The horizontal plane and the sagittal plane demonstrated a high level of positioning accuracy between the planned and the intraoral position. Statistically significant deviations between the preceding virtual setup and the intraoral situation were observed in the vertical dimension. Within the retainer, the intraoral positioning accuracy decreased for the measurement points in the direction of the distal retainer segment.

Conclusion

Based on the results, the present study shows a high level of congruence between the 3D virtually planning and the final intraoral position of the fabricated novel 3D CAD/CAM titanium retainers.

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Expert consensus on dental caries management

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International Journal of Oral Science, Published online: 31 March 2022; doi:10.1038/s41368-022-00167-3

Expert consensus on dental caries management
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Τετάρτη 30 Μαρτίου 2022

Air polishing or hand and/or power-driven instruments in supportive periodontal therapy

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This review of air polishing devices (APDs) in comparison with hand instruments and/or power-driven instruments in supportive periodontal treatment and implant maintenance included 6 RCTs. 4 of the 6 included studies were considered to be at high risk of bias so the findings should be interpreted cautiously.

The post Air polishing or hand and/or power-driven instruments in supportive periodontal therapy appeared first on National Elf Service.

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Subclonal heterogeneity sheds light on the transformation trajectory in IGLV3-21R110 chronic lymphocytic leukemia

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Comparison of stress distribution between zirconia/alloy endocrown and CAD/CAM multi-piece zirconia post-crown: three-dimensional finite element analysis

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Abstract

Objectives

This study aimed to evaluate a digital multi-piece zirconia post-crown to restore a mandibular second molar with extensive coronal loss and limited restoration space, and to compare the stress distribution between endocrowns made of zirconia or alloy and CAD/CAM multi-piece zirconia post-crowns.

Material and methods

Four three-dimensional finite element analysis models of a mandibular second molar with extensive coronal loss and limited restoration space were created as follows: (A) intact molar; (B) zirconia endocrown restored molar; (C) multi-piece post-crown restored-molar with tapered nail; (D) multi-piece post-crown restored molar with T-shaped nail. Models C and D were divided into two subgroups according to the material type: C1/D1, zirconia; C2/D2, NiCr alloy. The maximum modified von Mises failure criterion (mvM) stresses were calculated, and the stress distribution was recorded to analyze the effects of the restoration and material types on the biomechanical properties of dentin and prosthesis.

Results

The maximum mvM stress of dentin in model B (33.80 MPa) was lower compared with models C (C1, 37.81 MPa; C2, 36.36 MPa) and D (D1, 36.34 MPa; D2, 34.97 MPa) under vertical load, but the opposite was observed under oblique load. The highest mvM stress was concentrated in the nail region located in the root canal, and the T-shaped nail values were greater than the tapered nail, whereas model D with T-shaped nail showed a lower mvM stress level in dentin compared with Model C with tapered nail.

Conclusions

The digital multi-piece zirconia post-crown is a potential approach to restore mandibular second molars with extensive coronal loss and limited restoration space.

Clinical relevance

The digital multi-piece zirconia post-crown has potential to restore mandibular second molars with extensive coronal loss and limited restoration space using an innovative approach.

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The implicated clinical factors for outcomes in 304 patients with salivary duct carcinoma: Multi‐institutional retrospective analysis in Japan

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Abstract

Background

Salivary duct carcinoma (SDC) is a high-grade salivary malignancy that frequently occurs as the carcinomatous component of carcinoma ex pleomorphic adenoma. We herein examined the clinical factors affecting outcomes in a large cohort of SDC.

Methods

We selected 304 SDC cases and investigated clinical characteristics and the factors affecting outcomes.

Results

The median age of the cases examined was 68 years, the most common primary site was the parotid gland (238 cases), and there was a male predominance (M/F = 5:1). Outcomes were significantly worse when the primary tumor site was the minor salivary glands (SG) than when it was the major SG. Outcomes were also significantly worse in pN(+) cases (161 cases) than in pN0 cases, particularly those with a metastatic lymph node number ≥11. The cumulative incidence of relapse and distant metastases was significantly higher in stage IV cases than in stage 0–III cases.

Conclusions

The absolute number of lymph node metastases, higher stages, and the minor SG as the primary tumor site were identified as factors affecting the outcome of SDC.

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From a Slave to a Surgeon: David Kearney McDonogh, the First Black Otolaryngologist

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Otolaryngology–Head and Neck Surgery, Ahead of Print.
David McDonogh, born into chattel slavery in Louisiana in the early 1800s, accomplished the unfathomable by becoming the first Black otolaryngologist in the United States of America. With tireless determination and profound intellect, Dr McDonogh surmounted immeasurable adversity along his improbable journey to freedom and success as an eye, ear, nose, and throat doctor in New York. His doctorate in medicine was posthumously awarded to his great-great-granddaughter in 2018 by the Columbia University Vagelos College of Physicians and Surgeons. In this History of Otolaryngology piece, we share his extraordinary story.
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Systemic Steroids for Otolaryngology–Head and Neck Surgery Disorders: An Evidence-Based Primer for Clinicians

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Otolaryngology–Head and Neck Surgery, Ahead of Print.
ObjectiveTo offer pragmatic, evidence-informed guidance on the use of systemic corticosteroids (SCS) for common otolaryngologic disorders.Data SourcesPubMed, Cochrane Library, and American Academy of Otolaryngology–Head and Neck Surgery Foundation clinical practice guidelines.Review MethodsA comprehensive search of published literature through November 2021 was conducted on the efficacy of SCS, alone or in combination with other treatments, for managing disorders in otolaryngology and the subdisciplines. Clinical practice guidelines, systematic reviews, and randomized controlled trials, when available, were preferentially retrieved. Interventions and outcomes of SCS use were compiled to generate summary tables and narrative synthesis of findings.ConclusionsEvidence on the effectiveness of SCS varies widely across otolaryngology disorders. High-level evidence supports SCS use for Bell's palsy, sinonasal polyposis, a nd lower airway disease. Conversely, evidence is weak or absent for upper respiratory tract infection, eustachian tube dysfunction, benign paroxysmal positional vertigo, adenotonsillar hypertrophy, or nonallergic rhinitis. Evidence is indeterminate for acute laryngitis, acute pharyngitis, acute sinusitis, angioedema, chronic rhinosinusitis without polyps, Ménière's disease, postviral olfactory loss, postoperative nerve paresis/paralysis, facial pain, and sudden sensorineural hearing loss.Implications for PracticeClinicians should bring an evidence-informed lens to SCS prescribing to best counsel patients regarding the risks, anticipated benefits, and limited data on long-term effects. Alternate routes of corticosteroid administration—such as sprays, drops, inhalers, and intralesional injections—may be preferable for many disorders, particularly those that are self-limited or require a prolonged duration of therapy. Prudent use of SCS reduces the risk of medication-related ad verse effects. Clinicians who are conversant with high-level evidence can achieve optimal outcomes and stewardship when prescribing SCS.
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Subclonal heterogeneity sheds light on the transformation trajectory in IGLV3-21R110 chronic lymphocytic leukemia

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Blood Cancer Journal, Published online: 30 March 2022; doi:10.1038/s41408-022-00650-4

Subclonal heterogeneity sheds light on the transformation trajectory in IGLV3-21R110 chronic lymphocytic leukemia
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Comparison of the Osteogenic Effectiveness of an Autogenous Demineralized Dentin Matrix and Bio-Oss® in Bone Augmentation: A Systematic Review and Meta-analysis

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Publication date: Available online 29 March 2022

Source: British Journal of Oral and Maxillofacial Surgery

Author(s): Yanfei Li, Wanhang Zhou, Peiyi Li, Qipei Luo, Anqi Li, Xinchun Zhang

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