Success rate of palatal orthodontic implants: a prospective longitudinal study

AIM: The purpose of this prospective cohort study was to assess the survival and success rates of palatal implants. MATERIAL AND METHODS: Seventy patients (56 female, 14 male; age 25-6 +/- 10-8 years) receiving Orthosystem (Straumann AG, Basel, Switzerland) palatal implants from March 1999 to November 2006 were included. The indication was established according to the required anchorage for orthodontic therapy. All implants were placed in a mid-sagittal, median or paramedian palatal location by the same surgeon. They were orthodontically loaded after a healing period of 8-16 weeks (Mean: 12.8 weeks). RESULTS AND DISCUSSION: Of the initially 70 consecutively admitted patients, two implants in two patients were not primary stable after installation and had to be removed. Of the 70 initially installed palatal implants, 67 implants or 95.7% osseointegrated successfully and were loaded actively and/or passively for approximately 19 months. Only one implant of the 67 osseointegrated implants lost its stability under orthodontic loading. By the time of re-evaluation, 20 palatal implants were still used for orthodontic therapy, while 46 implants had been removed after completed orthodontic therapy. By only analyzing those, the success rate of the initially installed implants was 92%. CONCLUSIONS: Orthodontic palatal implants with a rough surface are predictable and highly reliable devices for a multitude of maxillary orthodontic treatment options. The survival and success rates for palatal orthodontic implants are comparable to dental implants installed for dental prostheses

The PHEMU21 catalogue and astrometric results of the observations of the mutual occultations and eclipses of the Galilean satellites of Jupiter made in 2021

International audience2021 was the year of Jupiter's equinox, that is the Sun and the Earth passed through the equatorial plane of the planet and therefore the orbital planes of its main satellites. This occurrence made it possible to observe mutual occultations and eclipses between the satellites. Our former experience shows that observations of such events provide accurate astrometric data that can be used to obtain new information on the dynamics of the Galilean satellites. The observations are a series of photometric measurements of a satellite which are carried out through the organization of a world wide campaign of observations thus maximizing the number and the quality of the data obtained. This work focuses on processing the photometric observations of the mutual occultations and eclipses of the Galilean satellites of Jupiter made during the international campaign in 2021. The final goal is to derive new accurate astrometric data. We used an accurate photometric model of mutual events in conjunction with the accuracy of observation. We obtained and processed the 84 light curves obtained during the campaign. As compared with the current best ephemerides, the rms of 'O-C' residuals are equal to 49 and 48 mas in right ascension and declination, respectively

Evaluation of the professional worth of scientific papers, their citation responding and the publication authority

Ve většině případů má paradigma "zveřejnit nebo zlikvidovat" nevyhnutelné důsledky pro kvalitu publikovaného výzkumu, protože vědecké výsledky jsou hodnoceny kvantitativně a nikoliv kvalitou. Tlak na vícenásobné publikování má za následek vytvoření takzvaných žurnálů predátorů, které působí bez požadovaného navrácení vrstevníků. Kromě toho citační záznamy dokumentů neodrážejí řádnou vědeckou kvalitu, která zvyšuje pouhé množství. Růst sofistikovaných "push-and-button" zařízení umožňuje snadnější přípravu publikací a usnadňuje data připravená k publikování. Články lze tedy sestavit pouhým kombinováním různých měření, obvykle bez představy o čem to všechno je a za jakým účelem to může sloužit. Navíc jakákoli hluboce zakořeněná teorie, která je v rozporu s běžnými popravami, není vítána, protože přerůstá beznadějnou často dlouhou praxi. Zatímco počet publikací je jednoznačně kvantitativním kritériem, hodně naděje bylo kladeno na citaci, která slíbila, že bude sloužit jako přiměřené měřítko skutečné vědecké hodnoty, tj. Kvality vědecké práce. Faktor dopadu souvisí s právem van't Hoffova koeficientu aktivity. Zejména je zkoumán případ ruské publikační politiky a politiky JTAC. JTAC je osvícen tím, že poskytuje základnu pro nové oblasti vědy o tepelných materiálech, které by měly být uznány jako dosud chybějící dopad.For the most part, the “publish or perish” paradigm has inevitable implications on the quality of research published because the scientific results are evaluated by quantity and not by quality. The pressure for multiple publication results in creation of so-called predators journals acting without the required peer reviving. Moreover, the citation records of papers do not reflect duly their scientific quality enhancing mere quantity. The growth of sophisticated “push-andbutton” apparatuses allows easier preparation of publications while facilitating ready-to-publish data. Articles can thus be compiled by mere combination of different measurements usually without idea what it all is about and to what purpose this may serve. Moreover, any deep-rooted theory which is contravening mainstream executions is not welcome because is breaking the effortless often long-established practice. While the number of publications is clearly a quantitative criterion, much hopes has been placed on citation, which promised to serve well as an adequate measure of the genuine scientific value, i.e., of quality of the scientific work. The impact factor is related to the van’t Hoff law of activity coefficient. The case of Russian publication policy and that of JTAC are particularly examined. JTAC is enlightened by providing basis for new fields of thermal material science which should be recognized as a yet missing impact