American journal of dentistry最新文献

{"title":"Wear resistance of self-adhesive and universal resin luting cements.","authors":"Miyuki Oshika, Yukari Odagiri, Kami Yoneyama, Mark A Latta, Wayne W Barkmeier, Akimasa Tsujimoto","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the wear resistance of conventional self-adhesive resin luting cements with that of recently developed universal resin luting cements under both dual-cure and chemical-cure conditions, and to evaluate the influence of mixing method (hand-mix or auto-mix).</p><p><strong>Methods: </strong>Five resin luting cements were evaluated: three universal cements [G-Cem One EM (GUA) and RelyX Universal (RUA) auto-mix types, and G-Cem One neo (GUH) hand-mix type) and two conventional self-adhesive cements (Clearfil SA Luting Multi in hand-mix (SH) and auto-mix (SA) forms, and RelyX Unicem 2 (RA) auto-mix type]. Wear resistance was assessed using an Alabama wear-testing machine. Volume loss (mm³) and maximum facet depth (µm) were measured after wear testing. Statistical analyses were performed to compare differences among materials, curing modes, and mixing methods.</p><p><strong>Results: </strong>The volume loss ranged from 0.054-0.167 mm³ and the maximum facet depth ranged from 99.6 to 222.7 µm. Significant differences were observed among the resin luting cements and between dual-cure and chemical-cure conditions. However, no significant differences were found between curing conditions within the universal resin luting cements. Additionally, no significant differences were identified between the hand-mixed and auto-mixed versions of the same or similar materials.</p><p><strong>Clinical significance: </strong>Wear resistance was strongly material dependent, but universal resin luting cements showed no influence of curing mode. A universal resin luting cement with good wear resistance may be a good option when restorative margins are difficult to illuminate.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"241-246"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of thermocycling and polishing protocols on the optical and mechanical properties of different CAD-CAM and 3D-printed materials.","authors":"Busra Tosun, Zeynep Ozturk","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the influence of material type and polishing protocol on translucency, surface roughness, hardness, and color stability of CAD-CAM and 3D-printed restorative materials before and after thermocycling.</p><p><strong>Methods: </strong>A total of 144 disk-shaped specimens (10 x 2 mm) were fabricated from VITA Enamic, Cerasmart, Celtra Duo, and a 3D-printed resin. Each was divided into four subgroups (n=9) based on surface treatment: glaze only; glaze, bur reduction, and composite polishing; glaze, bur reduction, and ceramic polishing; and glaze, bur reduction, and re-glazing. TP, Vickers hardness, surface roughness (Ra), and color change (ΔE) were measured before and after 10,000 thermal cycles. One specimen per group was examined by scanning electron microscopy. Data was analyzed with robust ANOVA (α= 0.05).</p><p><strong>Results: </strong>Material type and thermocycling significantly affected TP values (P< 0.001). CAD-CAM materials showed higher translucency and overall hardness values than the 3D-printed resin. Surface roughness was influenced by both material and polishing protocol (P< 0.001); glaze-only generally resulted in smoother surfaces, while ceramic polishing was associated with increased surface roughness in certain material groups. Color stability also varied significantly (P< 0.001); CAD-CAM ceramic polish showed the lowest ΔE values, while several 3D-printed groups exceeded clinically acceptable ΔE thresholds after thermocycling.</p><p><strong>Clinical significance: </strong>Material type, surface treatment, and thermocycling affected optical and mechanical properties. CAD-CAM materials generally outperformed the 3D-printed resin, especially in translucency and hardness. Mechanical polishing protocols may provide more stable long-term surface characteristics than glazing alone, particularly for esthetically demanding restorations.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"233-240"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oral microbiome and inflammatory bowel disease: A scoping review.","authors":"Caifeng Chen, Hongli Zhang, Tingting Cheng, Feng Zhou, Xiuli Chen, Mengna Fang, Peiwen Qi","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To examine the association between the oral microbiome and IBD in terms of microbiota diversity, composition, function, and diagnostic potential through a scoping review of the existing literature.</p><p><strong>Methods: </strong>This scoping review was structured following the PRISMA-ScR guidelines. Literature searches were conducted in PubMed, Embase, and the Cochrane Library, with the time frame restricted from database inception to November 17, 2025.</p><p><strong>Results: </strong>This review included 31 studies, among which seven topics for patients with periodontitis and IBD-related periodontitis, three studies assessed single bacterial species, and the remaining 21 articles explored the diversity and phylum-level taxonomic shifts of oral microbiota in IBD patients, functional and metabolic pathway alterations associated with oral dysbiosis, as well as the diagnostic potential and biomarkers derived from oral microbial profiles.</p><p><strong>Clinical significance: </strong>The oral microbiota of IBD patients exhibits characteristic dysbiosis, manifested by the enrichment of pathogenic taxa, depletion of anti-inflammatory species, and metabolic dysfunction, which are closely associated with gut microbial alterations and systemic inflammatory status. The salivary microbiome demonstrates significant diagnostic potential for IBD.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"253-258"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative effects of sodium fluoride and fluoride-free nano-hydroxyapatite dentifrices on viability and acidogenicity of cariogenic biofilms.","authors":"Beatriz H D Panariello, Brendon M Brunette, Carson C Davis","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the antibiofilm and antiacidogenic effects of a fluoride-free nano-hydroxyapatite (nHAp) dentifrice with a sodium fluoride (NaF) dentifrice against Streptococcus mutans biofilms in vitro.</p><p><strong>Methods: </strong>S. mutans UA159 biofilms were grown on hydroxyapatite discs and treated with a dentifrice containing nano-hydroxyapatite (nHAp) (Boka Ela Mint Fluoride Free Toothpaste), a 0.24% NaF dentifrice (Colgate Cavity Protection Toothpaste), 0.12% chlorhexidine (CHX, positive control), or sterile distilled water (negative control). Two experimental conditions were evaluated: treatment during biofilm development (twice-daily from 0 to 72 hours) and treatment of mature biofilms (treatments applied at 48 hours and evaluated at 72 hours). Outcomes included colony-forming unit (CFU) counts and pH of spent media. Data was analyzed using one-way ANOVA followed by Šídák multiple comparisons (α= 0.05).</p><p><strong>Results: </strong>During biofilm development, both dentifrices significantly reduced bacterial viability compared with the negative control (NaF, P< 0.0001; nHAp, P= 0.0200). However, when directly comparing the two, NaF caused a significantly greater reduction in bacterial viability than nHAp (P< 0.0001). Biofilms treated with NaF maintained higher pH values over time, indicating reduced acid production by S. mutans, whereas nHAp-treated groups showed moderate acidification. In mature biofilms, CHX and NaF demonstrated comparable antibiofilm activity, with no statistically significant difference between them (P= 0.0670). In contrast, nHAp showed significantly higher CFU counts than both CHX and NaF (P< 0.0001), although it still demonstrated a measurable reduction in bacterial viability compared with water control. NaF treatments significantly increased pH at 72 hours, whereas nHAp produced a smaller increase in pH. Altogether, the NaF dentifrice demonstrated superior antibiofilm and antiacidogenic effects compared with the fluoride-free nHAp dentifrice under the tested conditions.</p><p><strong>Clinical significance: </strong>The fluoride-free nano-hydroxyapatite dentifrice did not exhibit anticaries potential.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"247-252"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the bond strength of monolithic zirconia ceramics subjected to different surface pretreatments to dental tissues.","authors":"Gönül M Eyüboğlu-Ateş, Ayşe Koçak-Büyükdere","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the laboratory bond strength of monolithic zirconia ceramics subjected to four different surface pretreatments when cemented to enamel and dentin using a dual-cure resin cement.</p><p><strong>Methods: </strong>120 extracted human maxillary central and lateral incisors were prepared at two levels: enamel (E) and dentin (D). Zirconia specimens (0.7 mm thick) were divided into four groups: primer (P), sandblasting + primer (SP), silane (S), and tribochemical silica + silane (TS). Each group was further divided according to the bonding substrate, resulting in eight subgroups (n=15). After surface pretreatments, specimens were cemented, subjected to thermocycling, and tested for shear bond strength (SBS). Data were statistically analyzed (P< 0.05), and failure modes were examined under a stereomicroscope.</p><p><strong>Results: </strong>The type of dental substrate, surface pretreatment, and their interaction significantly affected SBS values (P< 0.001). Enamel groups showed higher bond strength than dentin groups (P< 0.001). The highest SBS values were obtained in the SP-E group (13.3 ± 2.3 MPa), while the lowest SBS values were obtained in the S-D group (2.5 ± 1.0 MPa).</p><p><strong>Clinical significance: </strong>This laboratory study provides some suggestions to clinicians on which surface pretreatment should be used and how deep the preparation should be during the cementation of ultra-translucent monolithic zirconia restorations. The results showed that applying an MDP-containing primer after airborne-particle abrasion and using silane following tribochemical silica coating significantly increased bond strength. In addition, keeping the preparation margins as much as possible at the enamel level enhances the long-term durability of the bond and should be prioritized in the planning of minimally invasive zirconia restorations.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"259-265"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical and laser desensitization approaches for managing dentin hypersensitivity after non-surgical periodontal therapy: A randomized clinical trial.","authors":"Gözde Erdoğan, Ece Açıkgöz-Alparslan, Mediha Büyükgöze-Dindar","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>This randomized clinical trial aimed to evaluate and compare the desensitizing efficacy of Gluma, Er,Cr:YSGG laser irradiation, and their combined application in Stage III/IV periodontitis patients presenting dentin hypersensitivity (DH) following non-surgical periodontal therapy (NSPT).</p><p><strong>Methods: </strong>62 patients were screened; 52 who met the inclusion criteria (Visual Analog Scale [VAS] > 4 and Schiff Cold Air Sensitivity Scale [SS] score 2-3) were randomized into three groups: Gluma (n= 18), Er,Cr:YSGG laser (n= 17) and combination therapy (n= 17). DH was assessed using VAS and SS at baseline, 1 week, 2 weeks, 1 month, 2 months, and 6 months. Four participants dropped out; analyses were conducted on 48 participants (16 per group). Statistical significance was set at α= 0.05.</p><p><strong>Results: </strong>All treatment modalities produced significant reductions in both VAS and SS scores over time (P< 0.05). DH was greatest immediately after NSPT and decreased progressively across early follow-ups, with the most pronounced improvement observed up to the second month. At 6 months, a slight recurrence of sensitivity was noted; however, symptom levels remained improved relative to baseline. No statistically significant intergroup differences were detected at any evaluation point for either outcome (P> 0.05), indicating comparable performance of Gluma, Er,Cr:YSGG laser, and the combined protocol throughout the 6-month follow-up.</p><p><strong>Clinical significance: </strong>Both chemical and laser-based desensitization therapies can be effectively and safely applied to manage post-NSPT dentin hypersensitivity in periodontitis patients. Nevertheless, clinicians should consider the possibility of symptom recurrence over longer follow-up and advise patients on appropriate maintenance or retreatment strategies.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"226-232"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevention of demineralization adjacent to glass-ionomer restorations by immediate laboratory application of topical fluoride agents.","authors":"Yun Jung Kim, Justine L Kolker, Jeff A Banas, Tabitha K Peter, Steve R Armstrong, Leonardo Marchini, Erliang Zeng","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To determine in the laboratory whether silver diamine fluoride (SDF) or sodium fluoride (NaF) varnish prevents demineralization adjacent to glass-ionomer restorations on root surfaces.</p><p><strong>Methods: </strong>45 non-carious molar roots were prepared for class V restorations and allocated into nine different groups: Fuji II LC; Fuji II LC + 38% SDF; Fuji II LC + 5% NaF; Equia Forte; Equia Forte + 38% SDF; Equia Forte + 5% NaF; Equia Forte + resin coating; Equia Forte + resin coating + 38% SDF; Equia Forte + resin coating + 5% NaF. Samples were immersed in MRS medium + 5% sucrose containing S. mutans and L. casei to develop a biofilm. Subsequently, the MRS medium was replenished daily and incubated at 37°C for 8 days. The lesion depth adjacent to the restoration was measured from images captured by a polarized light microscope. A Kruskal-Wallis test was used to compare the median depth measurements between groups. Dunn tests were used for pairwise comparison after Kruskal-Wallis test.</p><p><strong>Results: </strong>The lesion depth was least in restorations with 38% SDF and 5% NaF. Equia Forte and Equia Forte + resin coating + 5% NaF was significantly less demineralized than Fuji II LC without fluoride treatment. 38% SDF and 5% NaF varnish applied to newly placed glass-ionomer restorations reduce dentin demineralization.</p><p><strong>Clinical significance: </strong>The root caries could be prevented further by combining a fluoride-releasing material and applying topical fluoride agents. The immediate application of 38% SDF and 5% NaF varnish to the fluoride-releasing material may reduce the occurrence of root caries.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"266-272"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of contemporary resin-based restorative materials on the microbial composition of in vitro biofilm microcosms.","authors":"Sanjay Nandwani, Marlus da Silva Pedrosa, Ceib Phillips, Adalberto Vasconcellos, Apoena de Aguiar Ribeiro","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the influence of contemporary resin-based restorative materials on saliva-derived in vitro biofilm microcosms under cariogenic challenge.</p><p><strong>Methods: </strong>Thirty specimens (7 mm x 1.8 mm) were fabricated from five resin-based restorative materials (n= 6 per material) according to the manufacturers' instructions: Fuji Ionomer Type II LC (GC), Filtek Supreme Ultra (3M, ESPE), Activa BioActive (Pulpdent), FIT-SA (Shofu America), SDR Flow+ (Dentsply Sirona). Hydroxyapatite (HA) discs (7 mm x 1.8 mm; HiMed Inc.) were used as controls. All specimens were UV sterilized, and biofilms were developed on the specimens using saliva from healthy donors, with and without 0.2% sucrose supplementation to mimic cariogenic challenge. After incubation, biofilm-associated cells were detached and plated onto selective agar plates to quantify total facultative anaerobes, total anaerobic bacteria, mutans streptococci, and Lactobacillus spp. Plates were incubated either under 5% CO₂ or in an anaerobic chamber. CFU counts were normalized to the specimen surface area (log¹º CFU/cm²).</p><p><strong>Results: </strong>Recoverable viable counts were significantly influenced by both material type and environmental conditions. FIT-SA and SDR Flow+ supported higher bacterial loads, particularly for mutans streptococci and Lactobacillus spp., under sucrose-enriched conditions. In contrast, Fuji maintained lower recoverable CFU under all conditions, suggesting reduced bacterial accumulation on this material in this model. Materials like FIT-SA and SDR Flow+ may promote higher recoverable biofilm-associated bacterial loads under sucrose challenge, while Fuji exhibited consistently lower CFU across conditions.</p><p><strong>Clinical significance: </strong>Resin-based restorative materials marketed as bioactive supported varying levels of viable biofilm accumulation under sucrose challenge. These findings indicate that bioactive claims alone do not necessarily translate into reduced microbial burden and reinforce the need for effective disease control before definitive restorative placement, particularly in high caries-risk patients.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 5","pages":"218-225"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fibromyalgia and acute periapical abscesses.","authors":"Ilan Rotstein, Joseph Katz","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>This cross-sectional study was to assess the prevalence of acute PAs in fibromyalgia patients.</p><p><strong>Methods: </strong>Nine years of data from 2,108,676 patients were retrieved and analyzed by searching corresponding ICD-10 diagnosis codes for fibromyalgia and acute PAs. The odds ratio (OR) for acute PAs and their association with fibromyalgia were calculated and statistically analyzed using MEDCALC software at the 95% confidence level. Logistic regression and adjustment for diabetes, nicotine dependence, and alcohol use disorder comorbidities were done.</p><p><strong>Results: </strong>Overall, the OR for acute PAs in patients with fibromyalgia was 4.7, and the difference in prevalence compared to the total hospital patient population was statistically significant (P< 0.0001). After adjustment for diabetes, the OR was 2.8. After adjustment for nicotine dependence, the OR was 2.6. After adjustment for alcohol related disorders, the OR was 4.4. The difference in prevalence compared to the total hospital patient population remained statistically significant (P< 0.0001).</p><p><strong>Clinical significance: </strong>Clinicians should be aware of the possible higher prevalence of periapical abscesses in patients with fibromyalgia. More frequent dental visits for caries control and pulp disease prevention are warranted.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 4","pages":"173-176"},"PeriodicalIF":1.1,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the amount of dentifrice used for brushing on enamel and dentin abrasion.","authors":"Shaira R Kasi, Rafaela O Pilecco, Lucas S da Rosa, João Paulo M Tribst, Cornelis J Kleverlaan, Mutlu Özcan, Albert J Feilzer","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate whether the amount of dentifrice (dose) used per brushing affects the abrasion of the hard tooth tissues.</p><p><strong>Methods: </strong>Enamel and dentin specimens were subjected to simulated brushing with two commercial dentifrices (Prodent, Smyle dentifrice in tablet form) and positive as well as negative controls at varying amounts of dentifrices (standard dose, half, and double dose). Brushing without dentifrice (with water) functioned as a negative control. Tooth wear was quantified using profilometry, and statistical analysis was performed using one-way ANOVA and Tukey's post hoc test (α= 0.05).</p><p><strong>Results: </strong>For enamel, dose variations had minimal impact. However, dentin wear increased significantly with higher doses, particularly for the positive control and Smyle at double dose (P< 0.05). Dilution reduced abrasivity inconsistently across brands.</p><p><strong>Clinical significance: </strong>The amount of dentifrice used for brushing has a significant, dose-dependent effect on dentin abrasion, whereas enamel is relatively unaffected, and brushing without dentifrice does not cause wear. While dentifrice in tablet form provides a manufacturer‑defined standard amount per brushing, this is not the case for dentifrice in paste form. Because the amount of dentifrice used influences dentin wear, it is advisable that manufacturers clearly define the recommended quantity of dentifrice for a single brushing.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"39 4","pages":"201-205"},"PeriodicalIF":1.1,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}