Reciprocal Movement Research Articles

Comparison of Apically Extruded Debris Using Neoniti A1, ProTaper Gold, and WaveOne Gold Rotary Files in Mandibular Premolars: An In Vitro Study

Background: One of the main stages of root treatment is mechanical preparation, which is performed using manual and rotary instruments with rotational and reciprocal movement. Complete debridement of the root canal in the preparation process is essential for a successful endodontic treatment. This study investigated the amount of apically extruded debris using WaveOne Gold, ProTaper Gold (PTG), and Neoniti A1 rotary files in mandibular premolars. Methods: As many as 60 mandibular premolar teeth were divided into three equal groups. Each group was prepared with a rotary file (WaveOne Gold, PTG, or Neoniti A1). Then, debris measurements were performed using the Montgomery method, and SPSS v-26 and robust and Brown-Forsythe tests were used for data analysis. Results: The results showed that the highest and lowest amounts of extruded debris were in the PTG and WaveOne Gold files, respectively. There was a significant difference between the means of the three groups (P ˂ 0.05). In addition, to further evaluate the difference, the Games-Howell post hoc test was utilized, demonstrating a significant difference between the means of all three groups (P ˂ 0.001). Conclusion: The findings revealed that all systems extrude debris beyond the apical foramen. The WaveOne Gold system showed the lowest average value of apically extruded debris, followed by Neoniti A1, while ProTaper had the highest average value of apically extruded debris among the investigated systems. Thus, it is recommended that future studies investigate the effects of the properties and characteristics associated with the type of rotary files.

Characteristics of the Reciprocal Movement of Radiographers’ Gaze Based on a Comparison of Entry-Level and Experienced Radiographers

With the development of AI, AI may substitute for physicians in radiological interpretations in the future. The purpose of this paper is to identify factors that could form the foundation for algorithms enabling AI to explore pathological findings. This study focuses on the "angles of gaze trajectory" and "average speeds of gaze movement," and conducts a comparative analysis between entry-level and experienced radiographers. Firstly, based on the results of angles of gaze movement, experienced radiographers exhibited frequent movements around the 180-degree mark compared to entry-level radiographer. Both entrylevel and experienced radiographers commonly displayed frequent movements around 0 degrees and near 350 degrees. Secondly, according to the results of average speeds of gaze movement, entry-level radiographers were found to have faster movement speeds compared to experienced radiographers.

Do various financial resources ensure renewable energy production and environmental protection in OECD countries: modelling for insight.

The recent global energy crisis scenario echoes the past, and the vulnerability of traditional fuels remains the proximate cause of environmental degradation. The fundamental changes in mobilising finance resources are predominant in an energy transition. So, acknowledging finance and energy transition via financial and environmental technology is necessary to meet sustainable development goals. Accordingly, this study employs panel econometric models to investigate how financial resources can ensure the production of renewable energy and environmental protection in 38 OECD member nations over a time period from 2000 to 2021. The empirical finding shows that foreign direct investment and financial technology ameliorate environmental performance by alleviating CO2 emissions. Environmental technologies positively impact environmental protection by eliminating CO2 emissions. The financial resources ensure renewable energy production and environmental protection by reducing the environmental externalities and encouraging renewable energy consumption. Similarly, the consumption of renewable energy catalyses environmental improvement. Economic globalisation spurs environmental externalities. The D-H causality test also shows a reciprocal movement from environmental performance to financial technology, environmental technology and renewable energy consumption. The study's outcomes offer a new model of insight for governments as well as financial and energy policymakers to protect the environment. Enable sustainable development in OECD countries by empowering financial innovation through fintech and incentivising environmental technology to increase renewable energy production.

Another in Oneself: Hybridity of the narrative identity and followability as narrative hospitality for others

The following article investigates the hybridity of narrative identity. It explores how idem-identity and the ipse-identity interrelate through time and otherness and illustrates the process of self’s reflexive re-cognition via others. It posits that narrative identity encompasses both private and public dimensions, requiring a co-authorship that integrates collective identities. This article argues for an ethical dimension to this identity, emphasizing the reciprocal movement between self and other. It introduces the concept of followability, which involves reconstructing narratives in a resonance relationship, fostering narrative hospitality and mutual transformation. The study concludes by proposing an eschatological perspective as a horizon for followability, enhancing narrative refiguration through future-oriented imagination.

Comparison of Oral Diadochokinesis in Two- and Three-Syllable Structures Consisting of Consonants and Vowel /a/ with Two- and Three-Syllable Structures Consisting of Consonants and Vowel /u/ in 7-9-Year-Old Children of Kermanshah, Iran

Background and Objective: Diadochokinesis tasks, as a traditional component of speech-motor assessment, are an indicator of the evaluation of oral motor skills. This study aimed to help determine a criterion for the evaluation of the speed of consecutive movements by determination of diadochokinesis in normal children aged 7 to 9 years. Moreover, by creating syllabic assignments, consisting of closed and open vowels, it was possible to compare the speed of production in reciprocal movement conditions. Materials and Methods: The current descriptive-analytical study used a cross-sectional design. It was conducted on 210 primary school students in three age groups of 7, 8, and 9 years old in Kermanshah City, Iran, who were randomly selected. Students had to repeat two-syllable structures 15 times and three-syllable structures 10 times. The structures consisted of consonants and vowels/a/ and /u/ to determine their durations. Results: The production speed of the two-syllable structures /pata/ and /paka/ was significantly higher, compared to that of /putu/ and /puku/, respectively (P=0.002). However, in the two-syllable structures /taka/ and /tuku/ (P=0.09) and trisyllable structures /pataka/ and /putuku/ (P=0.11), the difference of the mean diadocokinesis was not significant. Therefore, the vowel /a/ increased the ability of diadochokinesis in some syllabic combinations but had no effect on some other combinations. Conclusion: With the increase of age, the ability to produce two- and three-syllable structures quickly and accurately increases. Usage of the vowel /a/, compared to the vowel /u/ in some syllabic combinations increased the speed of diadochokinesis but had no effect in some syllabic combinations

EPIDEMIOLOGY AND HEALTH IN TRANSIT

Traffic is a social phenomenon in which it portrays the structural disposition and positioning of man - machine, in reciprocal interaction and movement with the influences of the social environment, when the dimension of subjectivity breaks with the dichotomies ensnared in modern thought, such as; individual/society, intellectual/emotional, internal/external through a theoretical model on the human psyche from its generative character within the cultural fabric in which people and groups participate. The subject of this study is justified by the fact that, in this social context in which human subjectivities - truck drivers and their risky behaviour - converge, traffic is characterized as an environmental and interdisciplinary phenomenon. To this end, bibliographic sources were searched on various interfaces related to the man-machine dyad, using data sources such as Google Scholar, the Virtual Health Library (VHL), scientific articles and statistical data source platforms. The results related to risk behaviors encompassed the human fact as one of the most impactful (adding other adversities such as fear of dismissal, symptoms of stress, anxiety, competitiveness, homesickness, burnout, psychological and psychiatric illness, victims of violence and traffic accidents, substance abuse); the use of the driver-machine relationship «the house is your truck» and the influences on the issue of driver and passenger vulnerability is a factor that causes numerous accidents. Therefore, in the face of contemporary demands involving pressure and a race against time, a high level of responsibility related to loads and transportation, stressful situations and a lack of healthier psycho-emotional resources is a watershed, determining the life or death of many individuals moving between their worlds. Further research correlating the dimension of human subjectivity is therefore fruitfully suggested, with a view to aligning the profession of truck drivers with safer traffic, promoting the reframing of this phenomenon and safer traffic and preservation of life.

Dynamic behavior of DNA molecules in microchannels: exploring deflective, elliptical, and spin motions induced by Saffman and Magnus forces.

Precise manipulation of individual DNA molecules entering and leaving the channel ports, as well as their smooth passage across the channel, is essential for the detection and screening of DNA molecules using nano-/micro-fluidic technologies. In this paper, by combining single-molecule fluorescence imaging and numerical simulations, the motion states of DNA molecules translocating through a microfluidic channel under the action of the applied electric field are monitored and analyzed in detail. It is found that, under certain conditions of the applied electric field DNA molecules exhibit various motion states, including translation crossing, deflection outflow, reverse outflow, reciprocal movement, and elliptical movement. Simulations indicate that, under the action of Saffman force, DNA molecules can only undergo deflective motion when they experience a velocity gradient in the microchannel flow field; and they can only undergo elliptical motion when their deflective motion is accompanied by a spin motion. In this case, the Magnus force also plays an important role. The detailed study and elucidation of the movement states, dynamic characteristics and mechanisms of DNA molecules such as the deflective and elliptical motions under the actions of Saffman and Magnus forces have helpful implications for the development of related DNA/gene nano-/microfluidic chips, and for the separation, screening and detection of DNA molecules.

Comparative Evaluation of Apically Extruded Debris During Root Canal Preparation Using Three Different File Systems Applied Under 2.5% Sodium Hypochlorite or 2% CHX Irrigation.

The chemomechanical cleaning of the root canal system is performed using manual and rotary files. This study aimed to compare the effect of ProTaper, Reciproc and HyFlex rotary files considering 2.5% sodium hypochlorite and 2% chlorhexidine (CHX) as irrigating solutions on apical extrusion of intracanal debris. Single-canal mandibular premolars (N=165) were evaluated. The teeth were divided into 6 experimental groups (N=25) for root canal instrumentation using 3 file systems, (Reciproc, HyFlex and ProTaper) and two irrigation solutions, namely 2.5% sodium hypochlorite or 2% CHX. Fifteen teeth were also assigned into three control groups (n=5) with saline as irrigation solution. Eppendorf tubes were weighed and the teeth were placed inside. The canals were instrumented and the tubes weighed to determine the dry weight of extruded debris. Data were analyzed using one-way ANOVA and Bonferroni test (α=0.05). The mean amount of extruded debris using the sodium hypochlorite solution was significantly higher than other irrigating solutions (p⟨0.001). The mean amount of extruded debris using the Reciproc file system was significantly higher compared to ProTaper and HyFlex (p⟨0.001). The use of the sodium hypochlorite solution, single-file systems and reciprocal movement are associated with higher debris extrusion and might be associated with higher risk of postoperative pain.

The Coupling Effects Between Floating Insulation Plates and the Thermal Convection in their Bottoms---- An Understanding of Continental Drift

The phenomenon of dumpling drift was discovered during a cooking process, which triggered our thinking of the continental drift. After refining the existing common problems, an experiment on the thermal convection interaction between the floating heat insulation plates and the bottoms is designed. Through controlling variables, this paper investigates the floating patterns of floating insulation plates of different sizes on a thermally convective surface and the principles behind them. The findings show that the appropriate sizing of a floating plate can result in the manifestation of cyclic reciprocating movement on the water’s surface. The periodic movement observed in this phenomenon can be attributed to the obstruction of heat exchange between the water surface and the surrounding air by the floating plate. Consequently, alterations in the direction of water flow induce corresponding shifts in water temperature, which subsequently affect the movement direction of the floating plate. The final outcome is characterized by a periodic reciprocal movement of the floating plate as it interacts with the heat convection occurring at the bottom. Floating plates that are either undersized or oversized would remain stationary without exhibiting any cyclic drift. The decrease in water depth leads to a diminished thermal drive, thereby amplifying the cyclical nature of the motion shown by the floating plate. The above findings indicate that the dimensions of the continental plates present on the Earth's surface have an impact on both the velocity and duration of their movement. The observation that a plate that is too small stagnates on top of a subduction current, while a plate that is too large stagnates on top of an upwelling current, suggests that the smaller continent of New Zealand is likely to experience a decrease in elevation due to its location above a subduction current. Conversely, the larger continent of Africa is expected to undergo uplift and attain a higher elevation as a result of its position above an upwelling current.

Antisemitism: A psychoanalytic theory

AbstractAntisemitism has been a persistent and growing prejudice for millenniums against the Jewish people. This paper offers a general theory of group hatred appliable to antisemitism and other religious or racial prejudices. Theories of prejudice tend either to postulate an internal psychic template of hatred that is projected or postulate a social origin of hatred that is internalized. Rather there is a dialectic where there is a reciprocal movement between internal and external. The tendency to hate and project is a part of the human psyche, here called internal racism. Anxieties which cannot be contained internally can be stabilized by large‐group identity. When internal racism cannot be contained or the external social groups are weak, the result is pathological large‐group formations. A distinction can be made between personal antisemitism in which the hatred is projected onto a known person and impersonal antisemitism in which hatred is projected into groups. A fairy tale by the brother's Grimm, “The Jew among Thorns” is used to illustrate a number of personal antisemitic attitudes. “The Protocols of the Elders of Zion,” a forged document that appeared in pre‐revolutionary Russia, is used to illustrate impersonal antisemitism.

Evaluation of cyclic fatigue resistance of nickel titanium rotary instruments: A systematic review and meta- analysis

A number of different thermomechanical treatments of NiTi have been developed to overcome some of the drawbacks of the traditional NiTi alloy, namely, separation and distortion of instruments. The present study analyzes the data on nickel-titanium instruments and their cyclic fatigue resistance. Online electronic data base such as PubMed, Cochrane and Google scholar through 31 January 2000 to 31 January 2020 with only English language literature. Clinical study of 9 article review & stated that the Cyclic Fatigue Resistance Of Nickel Titanium Rotary Instruments tested in artificial blocks or canals ,tested with different NiTi rotary files between 200-500 rpm and accordingly torque under controled/uncntroled temperature in curved canls fracture occure. The findings of this systematic review and meta-analysis point to the possibility that the temperature at which the instruments are tested may affect the results of cyclic fatigue resistance on NiTi files with a different behavior depending on the heat treatment of the alloy and that an increase in the angle of curvature of artificial canals has a detrimental effect on the cyclic fatigue resistance. Reciprocal movement exhibited the best performance with regard to cyclic fatigue resistance. The thermal treatment of the instrument’s alloy, its cross section, and the glide path seem to influence the cyclic fatigue resistance. The cyclic fatigue resistance of instruments manufactured with the gold heat treatment is not influenced by room or intracanal temperature.

Analysis of a Hybrid Guided Bomb Control System while Self-guided to a Ground Target

This article presents a mathematical model and an algorithm for controlling a guided bomb to a moving and a stationary ground target. The target path was determined from the kinematic relationships of the reciprocal movement of the bomb and the ground target, based on the proportional approximation method. The analysed control system used sliding control, with the PID algorithm to determine the sliding plane. Three types of sliding planes were considered. In addition, a comparative analysis was carried out for three types of controllers: classic PID, sliding and hybrid. Selected results of the computer simulation are listed.

Isotopic evidence for soil water sources and reciprocal movement in a semi-arid degraded wetland: Implications for wetland restoration

Understanding water dynamics is a prerequisite for the restoration of degraded ecosystems in arid and semiarid regions. In this study, we carried out δD and δ18O analyses of precipitation, unsaturated soil water, overland flow, surface runoff, and groundwater samples from a seasonally flooded wetland in the Momoge National Nature Reserve of the Songnen Plain, Northeast China, to identify the water sources and understand the mechanisms of unsaturated soil water movement. Unsaturated soil water content (W/W%) at every 20 cm along with a soil profile (0–100 cm) was collected during the growing season, and the HYDRUS-1D model was used to simulate temporal-spatial variations. The results showed that the local meteoric water line (δD=5.90δ18O-7.34, R2=0.95) had a smaller slope and intercept than the global meteoric water line because of strong evaporation at our study site under semi-arid climate. The groundwater was partly recharged by local precipitation via overland flow and unsaturated soil water infiltration. Unsaturated soil water was sourced from both precipitation and groundwater with variations at different depths. The upper soil layer at 0–15 cm was mainly sourced from limited precipitation, while the groundwater could move up to a 25 cm layer during the dry period. The unsaturated soil water content increased with soil depth in the top 40 cm, decreased at depths of 40 to 80 cm, and increased again at depths of 80 to 100 cm. The HYDRUS-1D model could simulate the unsaturated soil water dynamics well in the upper (0–40 cm) and lower (80–100 cm) sections, but poorly for depths of 40–80 cm due to the upward and downward flow. The bidirectional unsaturated soil water movement highlights the importance of capillary groundwater for wetland plants with similar climatic or hydrogeological conditions.

Mitochondrial Effects on the Physiological Characteristics of Lentinula edodes

In the mating of filamentous basidiomycetes, dikaryotic mycelia are generated through the reciprocal movement of nuclei to a monokaryotic cytoplasm where a nucleus of compatible mating type resides, resulting in the establishment of two different dikaryotic strains having the same nuclei but different mitochondria. To better understand the role of mitochondria in mushrooms, we created four sets of dikaryotic strains of Lentinula edodes, including B2 × E13 (B2 side) and B2 × E13 (E13 side), B5 × E13 (B5 side) and B5 × E13 (E13 side), E8 × H3 (E8 side) and E8 × H3 (H3 side), and K3 × H3 (K3 side) and K3 × H3 (H3 side). The karyotypes and mitochondrial types of the dikaryotic strains were successfully identified by the A mating type markers and the mitochondrial variable length tandem repeat markers, respectively. Comparative analyses of the dikaryotic strains on the mycelial growth, substrate browning, fruiting characteristics, and mitochondrial gene expression revealed that certain mitochondria are more effective in the mycelial growth and the production of fruiting body, possibly through the activated energy metabolism. Our findings indicate that mitochondria affect the physiology of dikaryotic strains having the same nuclear information and therefore a selection strategy aimed at mitochondrial function is needed in the development of new mushroom strain.

A control system for MR damper-based suspension of front-loaded washing machines featuring magnetic induction coils and phase-lead compensator

This paper studies a semi-active control system for magneto-rheological (MR) damper-based suspension of front-loaded washing machines. In this system, a permanent magnet is fastened to the shaft end of a shear-mode MR damper and an induction coil is wound directly on the slots of damper housing. Vibration of the washing machine tube leads to the relative reciprocal movement between the magnet and induction coil, which results in an induction voltage. The induced voltage is then served as an input signal to control the damping force of the MR damper. Because of the MR fluid hysteresis, a phase-lead compensator and an amplifier are employed in the controller of the MR damper. After the controller design, simulations and experiments are performed to evaluate the control system effectiveness. From the experimental results, performance characteristics of the proposed control system are discussed and compared with those of constant current and uncontrolled states.

AN INVESTIGATION OF THE METAL FATIGUE OF DIFFERENT NICKEL-TITANIUM ROTARY INSTRUMENTS AFTER PROLONGED USE

Objective:This study aimed to compare the cyclic fatigue (CF) resistance of nickel-titanium (Ni-Ti) endodontic instruments from ProTaper (PTU), ProTaper Next (PTN), Wave One (WO), and Reciproc (RPC). Materials and Methods:In our study, PTU, PTN, WO, and RPC rotary files were divided into the experimental and control groups containing an equal number of samples. The experimental group files were used in the shaping of 80 extracted human lower premolar and lower molar teeth. The experimental and control group kits were then placed in the test apparatus and observed until they fractured. Fracture times were recorded and statistically evaluated. Results:In the one-to-one comparisons of the experimental and control group files, while the differences between the fracture times of the experimental and control group files were found to be statistically insignificant in RPC, WO, PTU, and PTN X1 files (p>0.05), fracture time differences were statistically significant in all PTN X2 files (p<0.05). As a result of the pairwise comparison of the experimental and control groups, the difference between the experimental and control groups of the WO and RPC files used with reciprocal movement was found to be statistically insignificant (p>0.05). Conclusion:The files used with reciprocal movement were found to be safer in terms of metal fatigue when compared to the other files used with rotational movement after the preparation.

Mutual beta power modulation in dyadic entrainment

Across a broad spectrum of interactions, humans exhibit a prominent tendency to synchronize their movements with one another. Traditionally, this phenomenon has been explained from the perspectives of predictive coding or dynamical systems theory. While these theories diverge with respect to whether individuals hold internal models of each other, they both assume a predictive or anticipatory mechanism enabling rhythmic interactions. However, the neural bases underpinning interpersonal synchronization are still a subject under active investigation. Here we provide evidence that the brain relies on a common oscillatory mechanism to pace self-generated rhythmic movements and to track the movements produced by a partner. By performing dual-electroencephalography recordings during a joint finger-tapping task, we identified an oscillatory component in the beta range (∼ 20 Hz), which was significantly modulated by both self-generated and other-generated movement. In conditions where the partners perceived each other, we observed periodic fluctuations of beta power as a function of the reciprocal movement cycles. Crucially, this modulation occurred both in visually and in auditorily coupled conditions, and was accompanied by recurrent periods of dyadic synchronized behavior. Our results show that periodic beta power modulations may be a critical mechanism underlying interpersonal synchronization, possibly enabling mutual predictions between coupled individuals, leading to co-regulation of timing and overt mutual adaptation. Our findings thus provide a potential bridge between influential theories attempting to explain interpersonal coordination, and a concrete connection to its neurophysiological bases.

СПОСІБ ДЕПАРТМЕНІЗАЦІЇ ЕЛЕКТРОННОЇ КАРТИ ПРИ ЗОВНІШНЬОМУ УПРАВЛІННІ РОЗХОДЖЕННЯ СУДЕН В ЗОНІ ВІДПОВІДАЛЬНОСТІ СУРС

Hazards to navigation create conditions for emergency situations, even when modern navigation devices are used. Now there are a few protocols of connection between ships, which are equipped with modern intellectual devices. Modern protocols of connection between ships are calculated by artificial intelligence. Using artificial intelligence allow seafarers achieve high level of navigation safety. Ship’s remote-control needs upgrading to achieve new level of safe maneuvering. Only creating new algorithms of system checking, which are used by external operators can improve navigation safety throughout The World Ocean. Integrated method of task’s complex solution is offered by using early determination of emergency factors in course of vessels’ passing under external control in VTS area. This paper is aimed at the development of a method of safe and gradual transition to autonomous shipping in the future through the use of electronic database of dangerous parameters of ship proximity through their model situational integration into modern ship information systems of electronic charts of VTS operators. Remote control of marine facilities in the future cannot go into the stage of safe implementation without the development of an algorithm for the gradual implementation of the control system by external operators. The transition to unmanned shipping requires the establishment of checkpoints to monitor the reciprocal movement of such facilities. Therefore, it is very important to ensure a safe transition period with the operation of remote control of the external operator of the ship's traffic control systems with local direct control of the ship by her crew. The use by qualified operators of vessel traffic control systems of the method of departmentization of the electronic chart to regional orthogonal zones on the basis of areas of unacceptable convergence parameters is just one of such innovative steps in ensuring the functioning of checkpoints. In the future, this method may become a part of the main operating system of intelligent protocol of communication for remote external control of vessels.

Comparative evaluation of sterilization- and temperature-dependent cyclic fatigue resistance of four different nickel-titanium rotary file systems with reciprocal motion

Aim: The aim of this study was to examine the effect of sterilization and temperature differences on the cyclic fatigue resistance of WaveOne Gold, Reciproc, Reciproc Blue, and Twisted File Adaptive rotary file systems. Methods: In total, 160 files and four file systems were used (n = 20). This study was carried out at two different temperatures: 20°C and 39°C. An artificial stainless-steel canal was used for the static cyclic fatigue test. The breaking times of the files were recorded and calculated by multiplying the number of revolutions by the rotational speed. The SPSS 22 program was used for statistical analysis. The Shapiro–Wilk test was used for data with a normal distribution. The Mann–Whitney U test was used for paired groups. The Kruskal–Wallis test was applied to groups with more than two variables where the data did not fit a normal distribution. Tukey’s post-hoc analysis was used to determine the source of differences. A value of p<0.05 was considered statistically significant. Results: When the lengths of the broken pieces and the numbers of breaks were compared at the two different temperatures, there was a significant difference between all the files. In addition, there was a significant between-group difference between the sterilized files and nonsterilized files (p < 0.05). Conclusion: The cyclic fatigue resistance of the Reciproc Blue file was higher than that of the other files. Low temperature increased cyclic fatigue resistance. How to cite this article: Çelikel B, Öztekin F. Comparative evaluation of sterilization and temperature-dependent cyclic fatigue resistance of four different nickel-titanium rotary file systems with reciprocal movement. J Med Dent Invest 2021;2:e211038 https://doi.org/10.5577/jomdi.e211038 Linguistic revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English. Checked for plagiarism: Yes

Gender imbalance in the genetic counseling profession: An Australasian perspective.

Gender imbalance exists in the genetic counseling profession, with approximately 95% of genetic counselors identifying as female. Genetic counseling programs in Australia have increased the proportion of male student enrolments in recent years, although this is yet to have an impact on gender balance in the profession more broadly. While significant resources have been allocated to improving female representation in traditionally male professions, there has not been a reciprocal movement of men into traditionally female professions. The lower status awarded to traditionally female roles creates a disincentive for men to choose non-traditional career paths. Although genetic counselors have expertise in both genetics and counseling, the profession is viewed as a predominantly helping profession and therefore 'women's work'. Men who work in traditionally female roles report role strain and stereotyping, which affect experiences at work and challenge personal identities. Male advantage is also documented, especially with respect to salary. There remains a lack of understanding of the effect of gender imbalance on aspects of patient care, genetic counselor training and education, and genetic counseling research.