Aim Resin composite (RC) are commonly used under full crowns. However, independent information is lacking to guide practitioners regarding core RC material selection. This study aimed at comparing the flexural properties of a large selection of commercially-available core build-up RCs (CBU-RC), either light-, self- or dual-cure, to conventional light-cure RCs. Methods RCs were injected into a 25 × 2×2mm Teflon mold, and either light-cured during 20 s (materials with claimed light-cure characteristics) or covered by aluminum during 10 min (dual- and self-cure CBU-RCs). They were subjected after a one-week water storage at 37.5 °C to three-point bending, and Flexural modulus ( E flex ) and Flexural Strength ( σ f ) were calculated ( n = 20). Thermogravimetric analysis ( n = 3) was performed to determine inorganic filler content (%). Results For dual-cure CBU-RCs, both RC ( p < .0001) and light-curing ( p = .0007) had a significant influence on E flex , while only RC was significant for σ f ( p < .0001). Between all conventional RCs and CBU-RCs, significant differences were observed ( p < .0001), both regarding E flex and σ f , with values ranging from 3.9 to 15.5 GPa and from 76 to 130.3 MPa, respectively. Higher E flex values were observed for light-cure RCs than for self- and dual-cure ones, while no clear trend was noticed regarding σ f . Good linear correlation was found between inorganic filler content and E flex ( R 2 =0.85, p < .0001), but not with σ f ( R 2 =0.08, p = .1609). Conclusion This work demonstrated a positive influence of light-curing on dual-cure CBU-RC’s E flex . It also highlighted large differences in flexural properties (especially E flex ) among the investigated materials, questioning the use of some CBU-RCs as dentin replacement in case of large tissue loss.

This study evaluates the gender distribution of Centralized Otolaryngology Research Efforts (CORE) grants by research subspeciality over the past decade. Demographic information on CORE grant recipients from 2010 to 2019 was extracted through an Internet search, and research projects were categorized by subspeciality. Of 343 grants awarded during this period, 127 (37%) were awarded to women. Analysis demonstrated lower absolute rates of CORE funding for women in all fields except pediatrics, but women receive a proportional number of grants for most subspecialities based on their representation within the field.

ObjectivesAs research in otolaryngology continues to expand rapidly, it is important to identify core journals to keep clinicians updated with the latest advances. This study is the first to characterize core journals in otolaryngology.MethodsUsing h‐index and impact factor (IF), the top 15 NLM‐indexed otolaryngology journals were selected for analysis. The references from all articles published in these journals in one randomized quarter were compiled into a citation rank list, with the most cited journal ranked the highest. Citation zonal distribution analysis was conducted to identify the zonal distribution of otolaryngology journals.ResultsA total of 3150 journals containing 26876 articles were cited in otolaryngology literature in April–June 2019. Laryngoscope was the most cited journal containing 1762 citations. IF is significantly associated with the h‐index for the top 10 otolaryngology journals (p = 0.032). Three core journal zones were identified, with Zone 1 containing 8 journals, Zone 2 containing 36 journals, and Zone 3 containing 189 journals. A linear relationship between the log journal rank for Zones 1–3 and a cumulative number of citations was found (R2 = 0.9948).ConclusionEight core journals for otolaryngology were identified: Laryngoscope, Otolaryngology—Head and Neck Surgery, Otology & Neurotology, JAMA Otolaryngology—Head & Neck Surgery, Head & Neck, European Archives of Oto‐Rhino‐Laryngology, International Journal of Pediatric Otorhinolaryngology, Annals of Otology, Rhinology & Laryngology. In the face of rapidly evolving research and a multitude of journals, the high citation density within these core journals highlights their utility in updating busy clinicians.Level of EvidenceNA Laryngoscope, 2023

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