NobleBlocks

Finchley Memorial Hospital

Hospital / health systemLondon, United Kingdom

Research output, citation impact, and the most-cited recent papers from Finchley Memorial Hospital (United Kingdom). Aggregated across the NobleBlocks index of 300M+ scholarly works.

Total works
254
Citations
1.4K
h-index
21
i10-index
38
Also known as
Finchley Cottage HospitalFinchley Memorial Hospital

Top-cited papers from Finchley Memorial Hospital

Child Development and Marital Relations
Frank D. Fincham
1998· Child Development166doi:10.1111/j.1467-8624.1998.tb06207.x

Abstract This article examines aspects of the marital relationship and its assessment relevant to scholars of child development. The case for attending to marriage in child research is outlined before reviewing what is known about the construct of marital quality, behavior, emotional responding, and cognition in marriage. Practical recommendations are made for assessing each of these areas before arguing that the child's perspective of the marriage is critical for understanding children's behavior. Several limitations and promises of marital research for understanding children are also discussed.

Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study
Ladan Eslamian, Ali Borzabadi‐Farahani, Shahedeh Karimi, Sepideh Saadat +1 more
2020· Nanomaterials72doi:10.3390/nano10081466

This study evaluated the effect of incorporating silver nanoparticles (AgNPs) into conventional orthodontic adhesive on its antibacterial activity and the shear bond strength (SBS) to stainless steel orthodontic brackets. Thirty-four extracted premolars were randomly allocated into two groups (n = 17). Orthodontic adhesive (Transbond XT, 3M Unitek) was blended with AgNPs (50 nm, 0.3% w/w) to form a nano-adhesive. In order to bond stainless steel twin brackets (0.022-inch, American Orthodontics), Transbond XT (n = 17) and nano-adhesive (n = 17) were used in each group, respectively, after acid etching (37% phosphoric acid, 30 s) and rinsing with water (15 s). SBS and the adhesive remnant index (ARI) scores were recorded. Antibacterial activity against Streptococcus mutans in both groups after 24 h and 30 days was assessed (Disc agar diffusion test) and the inhibition zone diameter around each specimen was measured and recorded. Adding AgNPs significantly (p = 0.009) reduced the mean (SD) SBS in the nano-adhesive group [10.51(7.15) MPa] compared to Transbond XT [17.72(10.55) MPa]. The ARI scores on the Transbond XT and nano-adhesive showed no statistically significant difference (p = 0.322). Nano-adhesive with AgNPs showed significant antibacterial activity against Streptococcus mutans at 24 h and 30 days (p < 0.001). In both groups, no significant decline in the zones of inhibition was detected after 30 days (p = 0.907). The findings suggest that SBS decreased after incorporation of AgNPs [0.3% (w/w)], but was still above the recommended SBS of 5.9–7.8 MPa. The nano-adhesive showed significant antibacterial activity which did not change much after 30 days.

Calendar of State Papers. Ireland
E. E. Cope
1913· Notes and Queries58doi:10.1093/nq/s11-vii.172.288n

Journal Article Calendar of State Papers. Ireland Get access E. E. Cope E. E. Cope 1Finchamstead Place, Berke Search for other works by this author on: Oxford Academic Google Scholar Notes and Queries, Volume s11-VII, Issue 172, 12 April 1913, Page 288, https://doi.org/10.1093/nq/s11-VII.172.288n Published: 12 April 1913

Xenophon on male love
Clifford Hindley
1999· The Classical Quarterly46doi:10.1093/cq/49.1.74

In a previous article I attempted to trace the way in which, for Xenophon, homosexual liaisons might or might not affect the discipline of military life, and the emphasis which he placed upon the virtue of self-control (έγκράτεια) in dealing with desires of this kind. The present paper seeks to broaden the enquiry into a study of Xenophon's attitude to male same-sex affairs in general.

The challenges of understanding differential attainment in postgraduate medical education
Rupal Shah, Sanjiv Ahluwalia
2019· British Journal of General Practice39doi:10.3399/bjgp19x705161

The gap in achievement between different demographic groups undertaking the same assessment is known as differential attainment. Differential attainment exists within and outside medicine and across undergraduate and postgraduate studies.1 Black and Minority Ethnic (BME) doctors perform less well than their white peers in undergraduate and postgraduate assessments. The statistics apply across all medical specialties and to all non-white ethnic groups, with the odds of failure of BME medics being up to 2.5 times higher than that of white medics.2 The General Medical Council3 has found that once in general practice and other specialty training, UK-qualified white candidates have an average 75% pass rate in postgraduate exams compared with 62.7% for UK-qualified BME candidates and 42.7% for non-European international medical graduates. Of UK medical graduates, 72% of BME Foundation doctors applying for a specialty training programme are successful on their first attempt, compared to 81% of white doctors.3 We propose that performance in undergraduate and postgraduate settings should be seen as a continuum. There is benefit in having longitudinal data to promote our understanding of differential attainment. It is often assumed that differences in performance might relate to language, prior academic performance, socioeconomic status, or examiner bias. Therefore, it is surprising that there is no proof that any of these factors can explain the differences seen in undergraduate medical studies.4 Similarly, there is little empiric evidence that can explain the variance seen in postgraduate exam results between UK-qualified BME and white doctors. Why is it that we are still struggling to understand the …

A Review of Research on Acupuncture for the Treatment of Lumbar Disk Protrusions and Associated Neurological Symptomatology
Wendy Longworth, Peter W. McCarthy
1997· The Journal of Alternative and Complementary Medicine37doi:10.1089/acm.1997.3.55

The association between acupuncture (AP) and pain relief is so strong that it has tended to obscure any other potentially significant clinical results. This review indicates the wealth of data from around the world on various aspects of AP treatment for low back syndromes related to lumbar intervertebral disk prolapse (PID). Although plentiful, the research is variable in quality, especially with respect to design, consistency, and follow-up. Even so, the large number of patients who appear to have been treated successfully (i.e., given a high degree of symptomatic relief) supports a potential role for AP. This is further supported by studies on patients who had previously had unsuccessful treatment with conservative methods. The role envisaged for AP, in cases of lumbar PID and sciatica, is at least of a supplementary therapy capable of reducing the requirement of more invasive forms of treatment. No such role is envisaged in cases of cauda equina compression where surgery must remain the treatment of choice. AP should be explored more fully, using appropriate designs, so that this discipline may achieve its full therapeutic potential in the West.

Orthognathic Surgery Treatment Need in a Turkish Adult Population: A Retrospective Study
Hatice Kübra Olkun, Ali Borzabadi‐Farahani, Sina Uçkan
2019· International Journal of Environmental Research and Public Health36doi:10.3390/ijerph16111881

Objectives: Limited information exists on orthognathic procedures and respective dentofacial deformities in Turkey. This retrospective study assessed the orthognathic surgery procedures in two universities, using the Index of Orthognathic Functional Treatment Need (IOFTN), and compared the IOFTN grades according to gender as well as sagittal and vertical skeletal relationships. Material and Methods: Records of 200 consecutive patients (120 females, 80 males, mean age = 23.4 (SD: 5.4) years) who received orthognathic treatment (2014–2018) were analyzed. Sagittal (ANB angle) and vertical skeletal type (GoGnSN angle), osteotomies, and IOFTN scores were recorded. Results: Class III, II, and I malocclusions formed 69%, 17.5%, and 13.5% of the samples, respectively. Class III skeletal relationships (69%) and high-angle cases (64%) were the most prevalent (p < 0.05). IOFTN scores were unevenly distributed among genders (p < 0.05) and the prevalent scores were 5.3 (40.5%), 4.3 (15.5%), 5.4 (13%), and 5.2 (7.5%), with 94% scoring 4 or 5 (great and very great functional need). Bimaxillary osteotomies were the most prevalent (55%), followed by LeFort I (32%), and 26% had genioplasty. Conclusion: IOFTN is a reliable tool to identify patients in need of orthognathic surgery. Class III malocclusions and Class III sagittal skeletal relationships were more common in this sample. Comparatively, a higher number of patients had genioplasty as a part of their treatment.

A knee-sparing distal femoral endoprosthesis using hydroxyapatite-coated extracortical plates
Abha A. Gupta, Rob Pollock, S.R. Cannon, Timothy Briggs +2 more
2006· Journal of Bone and Joint Surgery - British Volume35doi:10.1302/0301-620x.88b10.17756

We used a knee-sparing distal femoral endoprosthesis in young patients with malignant bone tumours of the distal femur in whom it was possible to resect the tumour and to preserve the distal femoral condyles. The proximal shaft of the endoprosthesis had a coated hydroxyapatite collar, while the distal end had hydroxyapatite-coated extracortical plates to secure it to the small residual femoral condylar fragment. We reviewed the preliminary results of this endoprosthesis in eight patients with primary bone tumours of the distal femur. Their mean age at surgery was 17.years (14 to 21). The mean follow-up was 24 months (20 to 31). At final follow-up the mean flexion at the knee was 102 degrees (20 degrees to 120 degrees) and the mean Musculoskeletal Tumour Society score was 80% (57% to 96.7%). There was excellent osteointegration at the prosthesis-proximal bone interface with formation of new bone around the hydroxyapatite collar. The prosthesis allowed preservation of the knee and achieved a good functional result. Formation of new bone and remodelling at the interface make the implant more secure. Further follow-up is required to determine the long-term structural integrity of the prosthesis.

Community, society, culture: three keys to understanding today's conflicted identities
Maurice Godelier
2010· Journal of the Royal Anthropological Institute30doi:10.1111/j.1467-9655.2009.01593.x

The author redefines three major concepts used in the social sciences: tribe, society, and community. He begins with his discovery that the Baruya, a tribe in New Guinea with whom he lived and worked, were not a society a few centuries ago. This made him wonder: How is a new society made? The author shows that neither kinship relations nor economic relations are sufficient to forge a new society. What welded a certain number of Baruya kin groups into a society were their political‐religious relations, which enabled them to establish a form of sovereignty over a territory, its inhabitants, and its resources. He goes on to compare other examples of more or less recently formed societies, among which is Saudi Arabia, whose beginnings date from the end of the eighteenth century; and he then clarifies the difference between tribe, society, ethnic group, and community, showing that a tribe is a society, but an ethnic group is a community. His analysis elucidates some contemporary situations, since tribes still play an important role in Iraq, Afghanistan, Jordan, and so on. Résumé L'auteur redéfinit trois grands concepts utilisés dans les sciences sociales : tribu, société et communauté. Son point de départ est le fait que les Baruya, une tribu de Nouvelle‐Guinée avec laquelle il a vécu et travaillé, ne formaient pas une société il y a quelques siècles. Cette découverte l'a conduit à se demander comment une société voyait le jour. L'auteur montre que ni les liens de parenté ni les relations économiques ne sont suffisants pour donner naissance à une nouvelle société. Ce qui a soudé un certain nombre de groupes de parenté baruya en une société, ce sont leurs relations politiques et religieuses, qui leur ont permis d'établir une forme de souveraineté sur un territoire, ses habitants et ses ressources. L'auteur poursuit en comparant d'autres exemples de sociétés d'apparition plus ou moins récentes, par exemple l'Arabie Saoudite dont les débuts remontent à la fin du XVIII e siècle. Il éclaircit ensuite la différence entre tribu, société, groupe ethnique et communauté, en montrant qu'une tribu est une société mais un groupe ethnique est une communauté. Son analyse fait la lumière sur certaines situations contemporaines, dans la mesure où les tribus jouent encore un rôle important en Irak, en Afghanistan, en Jordanie et ailleurs.

Rinderpest eradicated; what next?
J. Anderson, Michael D. Baron, Angus Cameron, Richard Kock +4 more
2011· Veterinary Record27doi:10.1136/vr.d4011

Epidemiological and modelling studies suggest that elimination of Onchocerca volvulus transmission (EoT) throughout Africa may not be achievable with annual mass drug administration (MDA) of ivermectin alone, particularly in areas of high endemicity and vector density.Single-dose Phase II and III clinical trials demonstrated moxidectin's superiority over ivermectin for prolonged clearance of O. volvulus microfilariae.We used the stochastic, individual-based EPIONCHO-IBM model to compare the probabilities of reaching EoT between ivermectin and moxidectin MDA for a range of endemicity levels (30 to 70% baseline microfilarial prevalence), treatment frequencies (annual and biannual) and therapeutic coverage/adherence values (65 and 80% of total population, with, respectively, 5 and 1% of systematic non-adherence).EPIONCHO-IBM's projections indicate that biannual (six-monthly) moxidectin MDA can reduce by half the number of years necessary to achieve EoT in mesoendemic areas and might be the only strategy that can achieve EoT in hyperendemic areas.Data needed to improve modelling projections include (i) the effect of repeated annual

Remineralization of Demineralized Enamel and Dentine Using 3 Dentifrices—An InVitro Study
Manjit Talwar, Ali Borzabadi‐Farahani, Edward Lynch, Peter Borsboom +1 more
2019· Dentistry Journal22doi:10.3390/dj7030091

Objectives: To monitor the electrical resistance of artificially demineralized enamel and root dentine after exposure to different fluoridated dentifrices and, using transversal microradiography, to quantify remineralization. Materials and methods: This in-vitro blind investigation used 20 extracted teeth (four groups of five each). Each group was exposed to one test dentifrice [Colgate PreviDent (5000 ppm F), Colgate Winterfresh gel (1100 ppm F), Fluocaril Bi-Fluoré (2500 ppm F) and placebo (without fluoride)] three times daily for three minutes for 4 weeks. In between exposure to the test dentifrices, teeth were stored in a saliva storage solution. An Electrical Caries Monitor measured the electrical resistance at baseline and during the four-week test period at weekly intervals. The measurements were log transformed and Duncan’s multiple range test applied. Remineralization was quantified using transversal microradiography. Results: Log mean (SD) electronic carries monitor (ECM) measurements in enamel at baseline and after 4 weeks of exposure to the test dentifrices were 4.07(1.53) and 3.87(0.90) (Placebo-Fluocaril), 4.11(1.86) and 4.64(1.43) (Colgate Winterfresh gel), 4.81(0.9) and 4.21(1.20) (Fluocaril Bi-Fluoré), and 4.60(0.88) and 3.76(0.9) (Colgate PreviDent). Corresponding measurements in dentine were 2.13(0.89) and 3.06(0.87) (Placebo-Fluocaril), 1.87(0.63) and 2.88(1.32) (Colgate Winterfresh gel), 2.47(1.20) and 1.65(0.60) (Fluocaril), and 2.16(0.00), and 2.34(1.07) for Colgate PreviDent. Lesion depth (µm) after microradiography in enamel was 100.1 (Placebo), 50.6 (Colgate Winterfresh gel), and 110.2 (Fluocaril, and 97.1 (Colgate PreviDent), and corresponding values in dentine were 169.7, 154.8, 183.7, and 153.5. The correlation of ECM and microradiographic parameters was negative (p < 0.05). Conclusion: Exposure of artificially demineralized enamel and root dentine to fluoridated dentifrices and saliva storage solution resulted in remineralization as follows: Colgate Winterfresh > Colgate PreviDent > Placebo-Fluocaril > Fluocaril Bi-Fluoré. Remineralization in teeth of the Placebo dentifrice group may be attributed to the presence of calcium and phosphate ions in the saliva storage solution.

Family therapy for childhood depression: researching significant moments
David Campbell, Vicki Bianco, Emilia Dowling, Henia Goldberg +2 more
2003· Journal of Family Therapy21doi:10.1111/1467-6427.00259

This paper is a qualitative family therapy process study which is part of a larger European‐based outcome study comparing family therapy to child psychotherapy plus parent support for depressed children and their families. The family therapists and two clinical supervisors from the original study formed themselves into a research team to study the process of therapy with twelve families. Therapists selected the significant moments from fifty‐nine sessions, and were then interviewed by the research team using a standard protocol to investigate the therapists' own thinking about the significant moments. Applying a thematic analysis, the significant moments were clustered into eleven themes. The paper discusses the rationale for this model of research, which is well suited for clinical teams, and the application of the themes to therapeutic work with depressed children and their families.

Virtual reality in the management of patients with low back and neck pain: a retrospective analysis of 82 people treated solely in the metaverse
Eran Orr, Tal Arbel, Miki Levy, Yaron Sela +3 more
2023· Archives of Physiotherapy21doi:10.1186/s40945-023-00163-8

BACKGROUND: Clinically, neck pain disorders (NPD) and non-specific low back pain (NS-LBP) are respectively the fourth and first most common conditions associated with the greatest number of years lived with disability. Remote delivery of care may benefit healthcare sustainability, reduce environmental pollution, and free up space for those requiring care non-virtual care. METHODS: A retrospective analysis was performed on 82 participants with NS-LBP and/or NPD who received exercise therapy delivered solely in the metaverse using virtually reality. The study was to determine if this was achievable, safe, had appropriate outcome measures that could be collected, and if there was any early evidence of beneficial effects. RESULTS: The study demonstrated that virtual reality treatment delivered via the metaverse appears to be safe (no adverse events or side effects). Data for more than 40 outcome measures were collected. Disability from NS-LBP was significantly reduced (Modified Oswestry Low Back Pain Disability Index) by 17.8% (p < 0.001) and from NPD (Neck Disability Index) by 23.2% (p = 0.02). CONCLUSIONS: The data suggest that this method of providing exercise therapy was feasible, and safe (no adverse events reported), that complete reports were obtained from a large selection of patients, and that software acquired outcomes were obtainable over a range of time points. Further prospective research is necessary to better understand our clinical findings.

The value of the role of the rehabilitation assistant
Shirley Pullenayegum, Beverley Fielding, Estel Du Plessis, Ian Peate
2005· British Journal of Nursing17doi:10.12968/bjon.2005.14.14.18556

This article outlines the experiences of nursing and therapy staff regarding the introduction of rehabilitation assistants. The authors discuss issues concerning a role (the rehabilitation assistant) that was created after staff identified that therapeutic input (nursing, physiotherapy, occupational therapy, speech and language therapies), which was provided from Monday to Friday, was not continued over weekend periods. A small-scale audit was carried out to assess the role and the efficacy of the rehabilitation assistant. The results demonstrate specific areas of the rehabilitative process that patients and their carers considered important. These include activities of living, general wellbeing and the patient's view towards rehabilitation over the weekend. This article demonstrates the value of the role of the rehabilitation assistant and how, together with effective multidisciplinary team working, it provides the impetus for a consistent and goal-directed rehabilitative process.

Ceramics for the Future: Advanced Millimeter-Wave Multilayer Multichip Module Integration and Packaging
Kamal K. Samanta
2017· IEEE Microwave Magazine17doi:10.1109/mmm.2017.2759598

The advantages of higher-frequency operation, such as wider bandwidth and finer spatial and temporal resolution, have led to increased interest in the use of millimeter-waves (mmWs) in both commercial and military applications-covering, in particular, areas ranging from high-speed wireless communication (including wireless local area networking, wireless gigabit communication, sensor networks, and fifth-generation systems) to space science to security [1]-[5]. For biological and health applications, mmW imaging offers a superior, safer, and lower-cost alternative to conventional techniques [6], [7].

Vestibular Incision Subperiosteal Tunnel Access (VISTA) for Surgically Facilitated Orthodontic Therapy (SFOT)
Homayoun H. Zadeh, Ali Borzabadi‐Farahani, Mehdi Fotovat, Seong‐Hun Kim
2019· Contemporary Clinical Dentistry16doi:10.4103/ccd.ccd_720_18

Surgically Facilitated Orthodontic Therapy (SFOT) in combination with bone augmentation and the placement of anchorage devices installed into bone have been used to accelerate and facilitate orthodontic treatment. This is usually performed after flap surgery, which is associated with moderate morbidity, as well as possible negative sequale such as gingival recession. The present case report illustrates the clinical benefits of vestibular incision subperiosteal tunnel access (VISTA) for SFOT, and tissue augmentation to facilitate orthodontic therapy. VISTA entails making vertical incision(s) in the vestibule followed by subperiosteal elevation of tunnels to provide direct access to the facial alveolar bone. Unlike previously reported vestibular access surgical procedures, VISTA allows for wider elevation of an access tunnel for clear visual and surgical access to perform careful inter-radicular corticotomy. The present report describes VISTA for corticotomy surgery (anterior mandible and maxillary teeth) in combination with the placement of titanium fixation devices and bone augmentation to facilitate orthodontic treatment of an adult female with borderline Class II Division 1 malocclusion, with excessive overjet and deepbite. In view of the fact that VISTA does not require surface incisions in the gingival margins or papillae, it potentially minimizes gingival recession that sometimes accompanies flap surgery.

Is exercise therapy the<i>right</i>treatment for rotator cuff‐related shoulder pain? Uncertainties, theory, and practice
Jared K. Powell, Jeremy Lewis, Ben Schram, Wayne Hing
2024· Musculoskeletal Care15doi:10.1002/msc.1879

BACKGROUND: Exercise therapy is a popular non-surgical treatment to help manage individuals with rotator cuff-related shoulder pain (RCRSP) and is recommended in all clinical practice guidelines. Due to modest effect sizes, low quality evidence, uncertainty relating to efficacy, and mechanism(s) of benefit, exercise as a therapeutic intervention has been the subject of increasing scrutiny. AIMS: The aim of this critical review is to lay out where the purported uncertainties of exercise for RCRSP exist by exploring the relevant quantitative and qualitative literature. We conclude by offering theoretical and practical considerations to help reduce the uncertainty of delivering exercise therapy in a clinical environment. RESULTS AND DISCUSSION: Uncertainty underpins much of the theory and practice of delivering exercise therapy for individuals with RCRSP. Nonetheless, exercise is an often-valued treatment by individuals with RCRSP, when provided within an appropriate clinical context. We encourage clinicians to use a shared decision-making paradigm and embrace a pluralistic model when prescribing therapeutic exercise. This may take the form of using exercise experiments to trial different exercise approaches, adjusting, and adapting the exercise type, load, and context based on the individual's symptom irritability, preferences, and goals. CONCLUSION: We contend that providing exercise therapy should remain a principal treatment option for helping individuals with RCRSP. Limitations notwithstanding, exercise therapy is relatively low cost, accessible, and often valued by individuals with RCRSP. The uncertainty surrounding exercise therapy requires ongoing research and emphasis could be directed towards investigating causal mechanisms to better understand how exercise may benefit an individual with RCRSP.

Consent, Confidentiality and the Ethics of PAR in the Context of Prison Research
James Ward, Di Bailey
2012· Studies in qualitative methodology13doi:10.1108/s1042-3192(2012)0000012011

Purpose – To consider the unique ethical dilemmas, such as limitations in confidentiality, that research in prison settings is required to address.Methodology/approach – The ethics of prison-based research are explored within the context of a three-year Participatory Action Research (PAR) project which aimed to involve staff and women in prison in the development of care pathways for self-harm.Findings – The ethics of prison research are complex and require the balancing of individual rights with prison security requirements. In keeping with the PAR approach the experience for two of the women of being involved in the research and action for change is discussed through their own accounts.Originality/value of paper – PAR has not been previously used in an English prison; this article provides an account of the ethical considerations of empowering methodologies with people who by their very status as prisoners are disempowered.Research implications – Although this is just one example within a women's prison the authors assert that PAR as a methodology within a prison environment is not only feasible but also desirable for engaging offenders in the development of services.Practical implications – The engagement of this traditionally ‘hard to reach’ groups of people can ensure the development of meaningful and effective services based upon service user's experiential expertise (Beresford, 2000).Social implications – PAR offers those in prison a stake in the development and design of services. This not only has personal benefits for the individual but also is likely to increase service uptake and relevance (Foster, J., Tyrell, K., Cropper, V., &amp; Hunt, N. (2005). Welcome to the team – Service users in staff recruitment. Drink and Drugs News, 21).

<i>Eros</i>and military command in Xenophon
Clifford Hindley
1994· The Classical Quarterly13doi:10.1017/s0009838800043810

Xenophon's concern with morality in his more philosophical writings is evident. But (as Vivienne Gray has recently argued) that concern embraces also his approach to history. In the Hellenica this interest in morality is not to be written off as a matter of marginal comment, but, it may be claimed, is integral to the historian's purpose. He is one for whom the determinants of history are (under the gods) the personalities and actions of great (and not so great) men, and it is natural for him to observe the interaction between personal morality and political and military actions. It is from this standpoint that the present article seeks to illustrate from Xenophon's writings one aspect of his outlook on these matters, – the role of self-control (or lack of it) over homoerotic desire in the context of military history. How far we can go behind his text to determine ‘what actually happened’ or use his testimony in developing a wider understanding of er ō s in classical Greece at large are matters for further enquiry.

An In-Vitro Analysis of Microleakage of Self-Adhesive Fissure Sealant vs. Conventional and GIC Fissure Sealants
Kristina Goršeta, Ali Borzabadi‐Farahani, Tara Vražić, Domagoj Glavina
2019· Dentistry Journal12doi:10.3390/dj7020032

Background: The microleakage of a self-adhesive composite, a glass ionomer fissure sealant and a conventional resin-based fissure sealant were compared. Materials and methods: Fifty intact human molars with well-delineated pits and fissures were used and divided into 5 groups (n = 10). Group 1 specimens were etched (37% phosphoric acid) and sealed with conventional resin-based sealant (Helioseal F, Ivoclar Vivadent). Both Group 2 and 3 specimens were sealed with self-adhesive composite (Constic, DMG), but in Group 3, specimens were also etched (37% phosphoric acid). In Groups 4 and 5, specimens were sealed with a GIC sealant (Equia Fill, GC Company), but Group 5 was also exposed to thermo-light curing (TLC) with a LED polymerization unit (60 s). Subsequently, specimens were thermocycled (1800 cycles, dwelling time of 10 s), immersed in 50% silver nitrate solution (45 min), placed in a photo-developing solution (Kodak) under a lamp (120 W, 6 h), and cut into 3–4 slices. Marginal leakage (dye penetration depth) was evaluated under a light microscope and the worst score of each specimen was recorded (0–3). Results: Constic showed the lowest microleakage (Constic: 80% scored 0 or 1), followed by Helioseal (30% scored 0 or 1) (p = 0.037). Microleakage in groups sealed with Constic (with and without etching) were not different (p = 0.473). The quality of seal deteriorated after etching when Constic was used. However, TLC improved the seal when GIC sealant was used (p = 0.016) and also in comparison to Helioseal (p = 0.004). The TLC GIC sealant (Equia Fill, 90% scored 0 or 1) performed well, similar to self-adhesive composite (Constic, 80% scored 0 or 1) (p = 0.206). Conclusion: The present findings suggest that the self-adhesive sealant and the GIC sealant that were exposed to TLC had comparable sealing ability and superior sealing characteristics compared to the conventional resin-based sealant. A long-term clinical trial is needed to assess the intra-oral performance.