Postendodontic Pain Using Single File System with Different Irrigation Protocols in Single-visit Root Canal Treatment: A Randomized Control Trial.

AIM: To evaluate the intensity of postendodontic pain (PEP) using final irrigation with side-vented needle (SV), EndoActivator (EA), and Ultra X (UX) in single-visit endodontics (SVE) with F-One rotary files. MATERIALS AND METHODS: A total 150 patients indicated for endodontic treatment were selected. Single-visit endodontics treatment was performed under local anesthesia. For the final irrigation protocol, they were divided into three groups: group I (SV), group II (EA), and group III (UX). The severity of PEP was assessed using visual analogue scale (VAS) score after 6, 12, 24, and 48 hours. Analgesics taken by patients, for pain, were also recorded. Finally, the data were tabulated and statistically analyzed using SPSS 20.0 software at a level of significance being 0.05. RESULTS: Postendodontic pain was less in group III (UX) and group II (EA) compared with group I (SV) at 6 and 12 hours, which is statistically significant (p < 0.05). There was no statistically significant difference found after 24 hours and 48 hours. CONCLUSION: The intensity of PEP was minimum in patients treated with EndoActivator and ultrasonic along with single rotary file systems. The incidence of analgesic intake was similar in all three groups. How to cite this article: Kathiria NV, Attur K, Bagda KM, et al. Postendodontic Pain Using Single File System with Different Irrigation Protocols in Single-visit Root Canal Treatment: A Randomized Control Trial. J Contemp Dent Pract 2024;25(2):180-185.

An easily implemented single-visit survey method for intermittently available and imperfectly detectable wildlife applied to the Florida east coast diamondback terrapin (Malaclemys terrapin tequesta).

Single-visit surveys of plots are often used for estimating the abundance of species of conservation concern. Less-than-perfect availability and detection of individuals can bias estimates if not properly accounted for. We developed field methods and a Bayesian model that accounts for availability and detection bias during single-visit visual plot surveys. We used simulated data to test the accuracy of the method under a realistic range of generating parameters and applied the method to Florida's east coast diamondback terrapin in the Indian River Lagoon system, where they were formerly common but have declined in recent decades. Simulations demonstrated that the method produces unbiased abundance estimates under a wide range of conditions that can be expected to occur in such surveys. Using terrapins as an example we show how to include covariates and random effects to improve estimates and learn about species-habitat relationships. Our method requires only counting individuals during short replicate surveys rather than keeping track of individual identity and is simple to implement in a variety of point count settings when individuals may be temporarily unavailable for observation. We provide examples in R and JAGS for implementing the model and to simulate and evaluate data to validate the application of the method under other study conditions.

Influence of different immediate dentin sealing strategies on bond strength of indirect resin nanoceramic restorations.

In this study, we evaluated the effect of four different strategies for bonding a CAD/CAM resin nanoceramic restoration (Lava Ultimate, 3M) to the dentin surface using a universal adhesive (Scotch Bond Universal, 3M) and adhesive resin cement (RelyX Ultimate, 3M) on the shear bond strength (SBS) and failure mode. The strategies comprised: (i) immediate sealing, immediate bonding; (ii) immediate sealing, bonding after 2 weeks with provisional restoration; (iii) immediate sealing with flowable resin composite reinforcement and bonding after 2 weeks with provisional restoration; and (iv) no immediate sealing, and bonding after 2 weeks with provisional restoration. After bonding, all the specimens were thermocycled, shear tests were performed using a universal testing machine, and failure modes were determined using stereomicroscope and scanning electron microscopy. The highest mean SBS was recorded with immediate sealing, immediate bonding strategy. Most adhesive failures with exposed dentinal tubules were noted in specimens exposed to bonding after 2 weeks with no immediate sealing, which was associated with the lowest SBS. Mixed failures predominated in all immediate dentin sealing groups. Immediate sealing with universal adhesives improves SBS, particularly in the single-visit approach, which has shown significantly better performance, whereas the provisional phase has a negative effect.

Single-Visit Long-Acting Reversible Contraception Initiation Among Adolescents Before and During COVID-19.

PURPOSE: Single-visit long-acting reversible contraception (LARC) is cost-effective and convenient. Our objective was to compare incidence of single-visit LARC placement and associated factors during the year before the COVID-19 pandemic (March 15, 2020) and the first year of the pandemic. METHODS: This retrospective cohort study analyzed electronic health records from a large healthcare system. Eligible adolescents were aged 10-19 years and received outpatient LARC from March 15, 2019 to March 14, 2021. Logistic regression models determined the relationship of patient and provider characteristics on single-visit LARC before and during COVID-19. RESULTS: One thousand six adolescents initiated LARC during the study period. Fewer adolescents received single-visit LARC during COVID-19 (289/506, 57.1%) compared to before (315/500, 63.0%), although changes in odds of single-visit LARC were not statistically significant. Concordance between county of patient residence and the location of the LARC placement facility was associated with single-visit LARC before (adjusted odds ratio [aOR] = 2.75) and during (aOR = 1.74) the pandemic (both p < .05). During the pandemic, a few factors were associated with reduced odds of single-visit LARC: (1) public insurance (aOR = 0.49, p < .01), (2) nonobstetricians/nongynecologists providers (pediatrics [aOR = 0.35, p < .01], family medicine [aOR = 0.53, p < .01], or internal medicine [aOR = 0.14, p < .05]), and (3) advanced practice practitioners (aOR = 0.49, p < .01). DISCUSSION: Incidence of single-visit LARC was similar before and during the pandemic. Certain factors were associated with lower odds of single-visit LARC insertion, suggesting differential access during the pandemic for subgroups of adolescents. Our findings may guide policy and programmatic interventions to improve access to single-visit LARC for all adolescent populations.

Photodynamic therapy for nodular basal cell carcinoma up to 5mm located on high-risk area: Effectiveness and long-term follow-up results.

SIGNIFICANCE: Response rates evaluation of photodynamic therapy (PDT) for nodular basal cell carcinoma (BCC) treatment located on high-risk and low-risk areas of the face. APPROACH: Two groups of nodular BCC were selected, debulked, and received 20% methyl aminolevulinate (MAL) hydrochloride cream. After 3 h, the first irradiation was performed (20 min, 150 J/cm2). Then, the cream was re-applied, and a second irradiation was performed after 1.5 h (20 min, 150 J/cm2). Clearance at 30 days and recurrence-free survival rate were evaluated. RESULTS: The clearance at 30 days after PDT was 89% for the low-risk area group and 87% for the high-risk group. The recurrence-free survival at 60 months was 82% and 85% for the high-risk and low-risk groups, respectively. CONCLUSIONS: No significant differences were observed between groups nor for clearance at 30 days, nor recurrence-free follow-up. These results make PDT possible option for nodular BCC less than 5 mm located in high-risk areas.

Endodontic Flare-Ups: An Update.

Root canal treatment deals with mechanical and chemical cleaning followed by obturation that promotes healing and repair of periradicular tissues. Flare-ups can occur in between or some days after endodontic therapy leading to unscheduled visit by the patient. This complication is characterized by severe pain and/ or swelling. There is a correlation between number of appointments, intracanal medicament used and flare-ups. However, there is no sure procedure that can avoid this complication. Therefore, this review article has discussed about causes and some procedures to prevent and treat flare-ups.

Single visit rabies pre-exposure prophylaxis: A literature review.

BACKGROUND: The current WHO-recommended rabies pre-exposure prophylaxis (PrEP) are two-visit vaccination schedules, but there are studies suggesting that single visit schedules might be sufficient to prime the immunity. METHODS: A literature review was conducted to retrieve and summarize published data on single visit rabies PrEP. PubMed database was screened for articles published between January 1st, 2003 and December 31st, 2022. The bibliographies of the articles chosen to undergo full text review and of the current major WHO publications on rabies were searched to find additional references, regardless of publication date. The primary outcome was the percentage of subjects having received rabies PrEP on single visit schedules who achieved antibody levels ≥0.5 IU/mL one week after post-exposure prophylaxis (PEP), regardless of the PEP regimen. RESULTS: 11 studies were selected for inclusion, totalling 935 subjects, of which 696 received a simulated PEP schedule. Of these 696, a serological test result on day 7 was available for 408 of them, and 406 subjects (99.51%) seroconverted after PEP without any difference regarding time delay between PrEP and PEP or the vaccination schedule used for PEP. CONCLUSION: Single visit PrEP schedules seem to confer sufficient protection in most healthy individuals without immunocompromised status if a booster PEP is administered after a suspected rabies exposure. Further studies in real-life settings and in different age categories are needed to confirm this finding, which may increase the availability of vaccines and thus the accessibility of PrEP for vulnerable populations.

Long-term follow-up of single-visit pulp revascularisation for the dens evaginatus and dens invaginatus: Cases report.

This article documents cases of single-visit pulp revascularisation for dens evaginatus and dens invaginatus, without using intracranial medicaments or antibiotics, aiming to provide a potentially applicable protocol for pulp revascularisation procedure in a single-visit. Two patients with chief complaints of pain and swelling visited a dental hospital. Radiographs revealed that the causative teeth had an open apex and periapical radiolucency, and the teeth were diagnosed as pulp necrosis and acute apical abscess or symptomatic apical periodontitis. For both cases, single-visit revascularisation was completed without intracanal medicaments or antibiotics. The patients were periodically recalled to evaluate periapical healing after treatment. The apical lesion healed, and the root dentin thickening was observed. The single-visit pulp revascularisation procedure without using specific intracanal medicaments can produce clinically favourable results for these dental anomalies.

Implementation and scale-up of a single-visit, screen-and-treat approach with thermal ablation for sustainable cervical cancer prevention services: a protocol for a stepped-wedge cluster randomized trial in Kenya.

BACKGROUND: An important cervical cancer prevention strategy in low- and middle-income countries (LMICs) has been single-visit screen-and-treat (SV-SAT) approach, using visual inspection with acetic acid (VIA) and ablative treatment with cryotherapy to manage precancerous lesions. While SV-SAT with VIA and cryotherapy have established efficacy, its population level coverage and impact on reducing cervical cancer burden remains low. In Kenya, the estimated cervical cancer screening uptake among women aged 30-49 is 16% and up to 70% of screen-positive women do not receive treatment. Thermal ablation for treatment of precancerous lesions of the cervix is recommended by the World Health Organization and has the potential to overcome logistical challenges associated with cryotherapy and facilitate implementation of SV-SAT approach and increase treatment rates of screen-positive women. In this 5-year prospective, stepped-wedge randomized trial, we plan to implement and evaluate the SV-SAT approach using VIA and thermal ablation in ten reproductive health clinics in central Kenya. METHODS: The study aims to develop and evaluate implementation strategies to inform the national scale-up of SV-SAT approach with VIA and thermal ablation through three aims: (1) develop locally tailored implementation strategies using multi-level participatory method with key stakeholders (patient, provider, system-level), (2) implement SV-SAT approach with VIA and thermal ablation and evaluate clinical and implementation outcomes, and (3) assess the budget impact of SV-SAT approach with VIA and thermal ablation compared to single-visit, screen-and-treat method using cryotherapy. DISCUSSION: Our findings will inform national scale-up of the SV-SAT approach with VIA and thermal ablation. We anticipate that this intervention, along with tailored implementation strategies will enhance the adoption and sustainability of cervical cancer screening and treatment compared to the standard of care using cryotherapy. TRIAL REGISTRATION: NCT05472311.

Single-visit insertion of long-acting reversible contraception in a single health system.

OBJECTIVE: To identify patient and practice characteristics associated with single-visit placement of long-acting reversible contraception (LARC) across the University of North Carolina Health system. STUDY DESIGN: We conducted a retrospective observational study using existing electronic health records. We abstracted data from charts of individuals ages 15-50 years who received a LARC device between March 15, 2019, and March 14, 2021. Our primary outcome was whether a patient received LARC at one, or after multiple, outpatient visits. We used descriptive statistics to examine patient, clinician, and practice characteristics. We used bivariate analysis and generalized estimating equation to examine relationships between characteristics and single-visit LARC receipt. RESULTS: Most of the 4599 individuals received care at obstetrics and gynecology clinics (3411/4599; 74%), and received their LARC device in a single visit (3163/4599; 69%). More intrauterine devices (3151) were placed than implants (1448). The adjusted odds of receiving a LARC in a single visit was highest for those who self-paid (aOR (adjusted odds ratio) 1.83, 1.19-2.82) and those who received an implant (aOR 1.25, 1.07-1.46). Patients seen by advanced practice practitioners (aOR 0.67, 0.56-0.80) or by an internal medicine specialty clinician (aOR 0.13, 0.00-0.35) had lower odds of receiving a single-visit LARC compared to those seen by a specialist obstetrician-gynecologist physician. CONCLUSION: Most single-visit LARC placements were performed by clinicians in obstetrician-gynecologist specialty practices. IMPLICATIONS: Among individuals seeking long-acting reversible contraceptives from clinics in a single health system in North Carolina, most received a device at a single visit and most single-visit insertions were done by an obstetrician-gynecologist.

Periradicular repair after single- and two-visit root canal treatments using ultrasonic irrigant activation and calcium hydroxide dressing of teeth with apical periodontitis: study protocol for randomized controlled trials.

BACKGROUND: In certain clinical situations, root canal treatment in teeth with apical periodontitis is performed in multiple visits, with the use of intracanal dressing between visits, aiming to reduce microorganisms and their by-products of the root canal system prior to filling. However, in recent years, discussions have been growing about the real need for the use of intracanal dressing in these cases. The use of ultrasonic activation of the auxiliary chemical substance has increased the potential for decontamination promoted during the chemomechanical preparation of the root canal. Thus, this study is designed to explore whether the use of intracanal dressing between visits during endodontic treatment favors periradicular repair in teeth with apical periodontitis. METHODS: This is a randomized, prospective, double-blinded, controlled clinical trial designed to evaluate 3 distinct clinical approaches used during endodontic therapy: group 1-root canal treatment in a single visit (RCT-SV); group 2-root canal treatment in two visits with intracanal dressing (RCT-TVWD); and group 3-root canal treatment in two visits without intracanal dressing (RCT-TVWOD). A total of 150 adult patients aged 18 to 60, with at least one tooth diagnosed with asymptomatic apical periodontitis and periradicular lesion (confirmed with a cone beam computed tomography (CBCT)), will be randomized and will undergo one of the types of clinical approaches during endodontic therapy. Patients' postoperative pain levels will also be recorded in periods of 24, 48, and 72 h and 7 days. Subsequently, clinical findings and long-term follow-up evaluations, with periradicular repair, will be performed at 6 and 12 months by intraoral periapical radiograph (IOPAR) and CBCT at the 24-month follow-up. DISCUSSION: This study will evaluate the periradicular repair of mandibular molar teeth with apical periodontitis, providing information about the efficacy, benefits, and safety of performing the endodontic treatment in a single and two visits, with and without the use of calcium hydroxide dressing. All endodontic therapy procedures will be performed under a dental operating microscope and using ultrasonic activation of auxiliary chemical substances. These results may contribute to changes in the clinical approaches adopted during endodontic therapy of teeth with apical periodontitis and reveal the potential of complementary approaches that aim to enhance the decontamination of the root canal system during the preparation stage. TRIAL REGISTRATION: ClinicalTrials.gov NCT05256667. Registered on 24 February 2022.

Analysis of the disease constituent ratio and prognosis of patients undergoing ambulatory surgery in oral and maxillofacial medicine: A monocentric retrospective analysis of 427 patients.

BACKGROUND: Ambulatory surgery and single-visit surgery are becoming increasingly accepted and practiced. MATERIALS AND METHODS: The clinical data of patients undergoing ambulatory surgery were collected, and information on their chief complaint and basic information was specifically included. Follow-up phone calls were conducted 1 and 3 days, 1 and 2 weeks, and 1 month after treatment. Information on their recovery and well-being was collected. RESULTS: A total of 427 patients (males: 224, females: 203, average age: 23.07±11 years) were recruited for this study. A total of 43.55% of the patients chose ambulatory surgery. A total of 62.9% of them selected it for convenience, while 43.55% selected it for pain reduction. The top three diseases treated by ambulatory surgery were impacted teeth (56.7%), jaw cyst (14.75%) and supernumerary teeth (10.07%). Postoperative complications occurred in 248 of the 427 patients, with an incidence rate of 58.08%. The complication that occurred most frequently was postoperative pain (56.44%). Complications frequently occurred on Day 3 after the operation and resolved after 2 weeks. CONCLUSION: After being diagnosed, ambulatory surgery is an effective mode of treatment for oral and maxillofacial diseases. Oral hygiene, professional postoperative follow-up visits and rigorous anesthesia evaluation are very important for ambulatory surgery for oral and maxillofacial diseases.

Single-visit long-acting reversible contraception provision and pregnancy rates within 3 months.

OBJECTIVES: To assess the occurrence of pregnancy in a cohort of women who received a copper intrauterine device (IUD), hormonal IUDs or an etonogestrel (ENG) contraceptive implant at a single-visit practice. METHODS: Prospective study conducted at the University of Campinas, Campinas, São Paulo, Brazil. We obtained data from four ongoing studies including both the date of the device placement, the first day of the last menstrual period, and the occurrence of pregnancy up to 3 months after device placement. RESULTS: We included 2479 device placements (413 TCu380A IUDs, 1476 hormonal IUD and 590 ENG implants). Almost half of the device placements (1113/2479; 44.9%) were performed within the first 5 days of the menstrual cycle. We observed three pregnancies: one in an ENG implant user who received the implant within days 1-5 of the menstrual cycle; one in a woman who received a hormonal IUD during days 6-10 of the menstrual cycle; and one in a copper IUD user with placement during days 21-25 of menstrual cycle. CONCLUSIONS: Single-visit long-acting reversible contraception placements are a good strategy with overall very low pregnancy rates. This strategy has a potential to reduce unintended pregnancies and to reduce costs and barriers to both women and the healthcare system.

Evaluation of a workflow for cone-beam CT-guided online adaptive palliative radiotherapy planned using diagnostic CT scans.

PURPOSE: Single-visit radiotherapy (RT) is beneficial for patients requiring pain control and can limit interruptions to systemic treatments. However, the requirement for a dedicated planning CT (pCT)-scan can result in treatment delays. We developed a workflow involving preplanning on available diagnostic CT (dCT) imaging, followed by online plan adaption using a cone-beam CT (CBCT)-scan prior to RT-delivery, in order to account for any changes in anatomy and target position. METHODS: Patients previously treated with palliative RT for bone metastases were selected from our hospital database. Patient dCT-images were deformed to treatment CBCTs in the Ethos platform (Varian Medical Systems) and a synthetic CT (sCT) generated. Treatment quality was analyzed by comparing a coverage of the V95% of the planning/clinical target volume and different organ-at-risk (OAR) doses between adapted and initial clinical treatment plans. Doses were recalculated on the CBCT and sCT in a separate treatment planning system. Adapted plan doses were measured on-couch using an anthropomorphic phantom with a Gafchromic EBT3 dosimetric film and compared to dose calculations. RESULTS: All adapted treatment plans met the clinical goals for target and OARs and outperformed the original treatment plans calculated on the (daily) sCT. Differences in V95% of the target volume coverage between the initial and adapted treatments were <0.2%. Dose recalculations on CBCT and sCT were comparable, and the average gamma pass rate (3%/2 mm) of dosimetric measurements was 98.8%. CONCLUSIONS: Online daily adaptive RT using dCTs instead of a dedicated pCT is feasible using the Ethos platform. This workflow has now been implemented clinically.

Honey bee introductions displace native bees and decrease pollination of a native wildflower.

Introduced species can have cascading effects on ecological communities, but indirect effects of species introductions are rarely the focus of ecological studies. For example, managed honey bees (Apis mellifera) have been widely introduced outside their native range and are increasingly dominant floral visitors. Multiple studies have documented how honey bees impact native bee communities through floral resource competition, but few have quantified how these competitive interactions indirectly affect pollination and plant reproduction. Such indirect effects are hard to detect because honey bees are themselves pollinators and may directly impact pollination through their own floral visits. The potentially huge but poorly understood impacts that non-native honey bees have on native plant populations combined with increased pressure from beekeepers to place hives in U.S. National Parks and Forests makes exploring impacts of honey bee introductions on native plant pollination of pressing concern. In this study, we used experimental hive additions, field observations, as well as single-visit and multiple-visit pollination effectiveness trials across multiple years to untangle the direct and indirect impacts of increasing honey bee abundance on the pollination of an ecologically important wildflower, Camassia quamash. We found compelling evidence that honey bee introductions indirectly decrease pollination by reducing nectar and pollen availability and competitively excluding visits from more effective native bees. In contrast, the direct impact of honey bee visits on pollination was negligible, and, if anything, negative. Honey bees were ineffective pollinators, and increasing visit quantity could not compensate for inferior visit quality. Indeed, although the effect was not statistically significant, increased honey bee visits had a marginally negative impact on seed production. Thus, honey bee introductions may erode longstanding plant-pollinator mutualisms, with negative consequences for plant reproduction. Our study calls for a more thorough understanding of the indirect effects of species introductions and more careful coordination of hive placements.

The effect of two different root canal sealers on treatment outcome and post-obturation pain in single-visit root canal treatment: A prospective randomized clinical trial.

AIM: This randomized clinical trial aimed to evaluate and compare the effect of mineral trioxide aggregate (MTA)-based bioceramic- and resin-based sealers on the incidence and intensity of post-obturation pain and treatment outcome in asymptomatic vital molar teeth in single-visit root canal treatment. METHODOLOGY: One hundred asymptomatic mandibular molar teeth with vital pulp were randomly assigned into two groups according to the sealer used: MTA Fillapex or AH Plus sealer. WaveOne Gold instruments were used for root canal preparations. Root canals were obturated with WaveOne Gold gutta-percha cones corresponding in size and taper to the last instrument used. MTA Fillapex was used in the first group and AH Plus was used in the second group as the root canal sealer. The effects of age, gender, tooth types and the level of root canal filling on the treatment outcome were evaluated after 1 and 2 years. Postoperative pain at 6, 12, 24, 48, 72 h, 4, 5, 6, 7 and 30 days after root canal treatment was measured with the Numerical Rating Scale. Chi-square test was used for the treatment outcome and Mann-Whitney U, chi-Square and Spearman correlation analyses were used for postoperative pain. α = .05 was the level of significance. RESULTS: Twelve patients did not complete the 2-year follow-up and the study finished with 88 patients. In the MTA Fillapex group 41 correct, one short, two extruded, and in the AH Plus group 40 correct, one short and three extruded root canal fillings were detected. No significant differences were observed between the first- and second-year treatment outcomes between the groups (p > .05).There was no association between age, gender, tooth number, root canal filling length and the treatment success in all evaluated teeth (p > .05). The differences between the groups in terms of postoperative pain incidence and intensity at all time-points were not significant (p > .05). There was no correlation between the age and postoperative pain (p > .05), but pain was statistically higher in women (p < .05). CONCLUSIONS: Mineral trioxide aggregate Fillapex showed similar success rate and post-obturation pain incidence and intensity as AH Plus sealer and can be used as a root canal sealer in asymptomatic mandibular molars with irreversible pulpitis.

The Effect of Trypsin-Chymotrypsin on Postoperative Pain after Single Visit Endodontic Treatment: A Randomized Controlled Trial.

INTRODUCTION: The efficacy of trypsin-chymotrypsin in postoperative pain management following single-visit root canal treatment of teeth with symptomatic irreversible pulpitis was evaluated. Additionally, synergistic effects with nonsteroidal anti-inflammatory drugs and reported side effects were also investigated. METHODS: This prospective, parallel, triple-blinded phase IV randomized controlled trial included 60 patients with mandibular first molars exhibiting symptomatic irreversible pulpitis. The patients were randomly allocated using computer software to one of four treatment groups (n = 15 each), and either ibuprofen (600 mg), ambezim-G (trypsin 5mg-chymotrypsin 5 mg), a combination of both, or a placebo drug were administered postoperatively. The participants scored pain intensity at different time-intervals using a numerical scale, and passive surveillance of harm was used to detect clinical safety. Age was compared between groups using a one-way analysis of variance test. Pain scores were analyzed using the Kruskal-Wallis and Friedman's tests and, if significant, Dunn's test was used for pairwise comparisons. The chi-square test was used to compare qualitative data, and the significance level was set at P value ≤ .05. RESULTS: All interventions were found to be effective in reducing postoperative pain, and no statistically significant differences were observed between the ibuprofen, trypsin-chymotrypsin, and combination groups. However, all 3 groups differed significantly from the placebo group. The safety profile of the interventions did not differ significantly. CONCLUSIONS: Trypsin-chymotrypsin exhibits comparable efficacy to nonsteroidal anti-inflammatory drugs. No synergistic effects occur when the 2 are used in combination. This is the first randomized controlled trial to assess the effects of proteolytic enzymes on postendodontic pain. TRIAL REGISTRATION: clinicaltrials.gov, Identifier: NCT05479747.

Three-dimensional Printed Esthetic Innovative Space Maintainer for Children with ADHD: Short Communication.

This current clinical technique describes the case report regarding single-visit fabrication, three-dimensional (3D) printing, and delivery of space maintainers in two children with severe attention-deficit hyperactivity disorder. How to cite this article: Rathi N, Tirupathi, Sawarkar S. Three-dimensional Printed Esthetic Innovative Space Maintainer for Children with ADHD: Short Communication. Int J Clin Pediatr Dent 2023;16(6):908-910.

A randomized controlled trial to evaluate the incidence of postoperative pain and flare-ups in single and multiple visits root canal treatment.

Background: Irreversible pulpitis is a painful and debilitating condition. Root canal treatment (RCT) provides prompt relief and salvages the affected tooth/teeth. It has classically been performed as a multivisit procedure. A relatively newer approach constitutes performing all the steps in one single visit. This study was designed to explore if single-visit RCT could be confidently used as an effective and preferred treatment modality for irreversible pulpitis in the Indian Armed forces. Methods: The study compared the incidence of postoperative pain, tenderness on percussion (TOP), flare-ups, and the analgesic drug use in 60 cases of acute irreversible pulpitis who were treated by either single or multiple visit root canal therapy. Each treatment group included 30 patients who were evaluated preoperatively and postoperatively at 24 h, one week and one month. Results: The study found statistically higher incidence of postoperative pain (mild variant) and TOP in single visit therapy, 24 h after the obturation while the difference was insignificant at one week and one month after therapy. Analgesic use was significantly higher after the single visit therapy in the first 24 h. No flare-ups were recorded in either group. Significant pain and tenderness was observed after chemo-mechanical preparation (appointment 2) in multivisit regimen. Conclusion: Single visit therapy is a safe, practical, and effective approach. The treatment results are similar to the multivisit regimen. It should therefore be considered for wider adoption and application.

Why honeybees are poor pollinators of a mass-flowering plant: Experimental support for the low pollen quality hypothesis.

PREMISE: Honeybees dominate the flower-visitor assemblages of many plant species, yet their efficiency in terms of the quality of pollen delivered to stigmas is largely unknown. We investigated why honeybees are poor pollinators of Aloe ferox, a self-incompatible succulent treelet with large numbers of flowers. Honeybees are very frequent visitors to flowers of this species, yet contribute very little to seed production. METHODS: We assessed pollen loads on honeybees, studied their visitation behavior, selectively excluded birds from plants to determine direct effects of bees on pollen deposition, seed set, and ovule abortion, and used a novel "split-pollinator" method to test whether honeybees deposit mainly low-quality self pollen. For the latter, we captured honeybees, and with their existing pollen loads, used them to either pollinate virgin flowers on the plant on which they were caught or to pollinate virgin flowers on different plants. RESULTS: Honeybees cumulatively deposit as much pollen on stigmas as do birds, but our experiments showed that the pollen deposited by honeybees is mostly low-quality self pollen that leads to substantial ovule discounting and depressed seed set. CONCLUSIONS: Lack of movement among A. ferox plants during individual honeybee foraging bouts is the most likely explanation for their deposition of low-quality self pollen on stigmas. The "split-pollinator" method is a simple and cost-effective technique to test the quality of pollination.