Dentoalveloar Compensatory Mechanism in Skeletal Open Bite

Svrha istraživanja bila je utvrditi morfološke značajke u ispitanika sa skeletnim otvorenim zagrizom, odnosno povećanim mandibularnim kutom povezanost dubine prijeklopa s vrijednostima veličine kuta mandibularne baze, kuta maksilarne baze i međučeljusnoga kuta povezanost dubine prijeklopa s vrijednostima prednje i stražnje visine lica, te dentoalveolarne kompenzatorne mehanizme kod okomitoga tipa rasta. Uzorak se sastojao od 77 laterolateralnih rentgenkefalograma ispitanika sa skeletnim otvorenim zagrizom, obaju spolova, dobi od 13 do 18 godina. Utvrđeno je da 49,4% ispitanika ima otvoreni zagriz a 50,6% ispitanika je kompenzirano, tj. da 41,5% ima normalni prijeklop, a 9,1% duboki zagriz. Ne postoji povezanost dubine prijeklopa s vrijednostima veličine kutova koje čine maksilarna i kranijalna baza, mandibularna i kranijalna baza, te međučeljusnoga kuta. Prednja donja visina (spa-gn) i ukupna prednja visina lica (n-gn) statistički su znatno manje u skupini ispitanika s dubokim prijeklopom. U skupini ispitanika s dubokim zagrizom prona|eno je statistički znatno smanjena udaljenost vrha kvržice gornjega prvog molara i apeksa od baze maksile.The object of the study was to determine morphologic characteristics in subjects with skeletal open bite and increased mandibular angle; correlation between the depth of the over bite and values of the size of the angle of the mandibular base, maxillary base and intermaxillary angle; correlation between the depth of the over bite with values of anterior and posterior facial height and dentoalveolar compensatory mechanism in vertical type growth. The sample consisted of 77 laterolateral cephalograms of subjects with skeletal open bite of both genders, aged from 13 to 18 years. It was determined that 49.4% of the subjects had open bite, while 50.6% of the subjects were compensated, i.e. 41.5% had normal over bite and 9.1% deep bite

The extraction efficiency of maceration, UAE and MSPD in the extraction of pyrethrins from Dalmatian pyrethrum

Dalmatian pyrethrum (Tanacetum cinerariifolium /Trevir./ Sch. Bip.) synthesizes secondary metabolite pyrethrin, known for its potent insecticidal and repellent activity. The present study was aimed at optimizing the maceration extraction parameters that improve the efficiency of pyrethrin extraction from the dried Dalmatian pyrethrum flower heads. Extraction efficiencies under several conditions were investigated: different solvent types, extraction time, the rotational speed of the stirrer, and the solvent volume. The highest recovery values were obtained with 5 mL of acetone, at the rotational speed of 400 rpm, and the extraction time of three hours. In addition, the extraction efficiency of maceration was compared to that of ultrasound-assisted and matrix solid phase dispersion extraction, both previously optimized for pyrethrin extraction. The extractions were carried out on samples of three natural Dalmatian pyrethrum populations (Krk, Mt. Kozjak, and Senj). Both the total pyrethrin content and the HPLC profile varied between different extraction techniques. Across applied methods, the highest efficiency was observed with matrix solid phase dispersion extraction. Evaluation of the differences between data obtained using different extraction techniques was performed by the Bland-Altman analysis, revealing good agreement between the three methods

Regionalni geoidi u svijetu

Ovaj pregledni rad nastao je u sklopu kolegija Određivanje oblika Zemlje (diplomski studij Geodetskog fakulteta Sveučilišta u Zagrebu, Zavod za geomatiku). Rad je rezultat istraživanja dosadašnjih postignuća na području određivanja regionalnih geoida. Za Europu, Afriku, Australiju, Sjevernu i Južnu Ameriku prezentirana su najnovija rješenja regionalnih (kontinentalnih) geoida s kratkim osvrtom na metode računanja, na vrstu i količinu upotrijebljenih podataka te na pripadajuću ocjenu točnosti. S obzirom na veliku dinamiku razvoja globalnih geopotencijalnih modela te poboljšanje točnosti regionalnih i lokalnih geoida posljednjih godina, u obzir su uzeti samo najnoviji rezultati. Regionalni se geoidi u suvremeno doba dobivaju iz podataka različitih točnosti, gustoća i homogenosti. Podaci se dobivaju kombinacijom različitih svemirskih, satelitskih i terestričkih geodetskih tehnika i zato je posve jasno kako zadatak određivanja regionalnih geoida zahtijeva velike napore i međusobnu suradnju svih nacionalnih geodetskih institucija na regionalnom i globalnom nivou

Soft Tissue Facial Profile of Normal Dental and Skeletal Subjects in Croatian Population Aged 12 to 15 Years

This study was carried out on 40 lateral cephalograms of Croatian subjects aged 12 to 15 years with dental and skeletal class I. The purpose of this investigation was to determine the means and standard deviations of the soft tissue parameters in the sample of Croatian population exhibiting dental and skeletal class I and to find the correlations between investigated parameters. The investigation included a total of 11 variables of which 4 were angular and 7 linear. Linear and angular measurements were made to the nearest 0.5 mm or 0.5° with dial calipers and a standard protractor with 0.5° increments. Data from this investigation could serve to determine the norms of 11 soft tissue variables for Croatian population with dental and skeletal class I, and to define craniofacial morphology of the soft tissue profile in patients with normal occlusion. Significant correlations were found between thickness of upper and lower lip, and between the distance of upper and lower lip to the Ricketts esthetic line, and Holdaway angle

The first contribution to the ethnobotany of inland Dalmatia: medicinal and wild food plants of the Knin area, Croatia

An ethnobotanical survey was carried out in the Knin area (northern Dalmatia, Croatia) with the aim of recording traditional plant use by the local (native) people and contributing to the knowledge of plant biodiversity in the investigated area. Ethnobotanical data were collected by interviewing 40 local people at 17 locations. Data on 123 plant taxa (on average 21 taxa per interview) and 122 unique medicinal and 18 food uses in the local community were recorded. Prevalent medicinal uses of the recorded taxa were the treatment of digestive, respiratory, cardiovascular disorders, and injuries. The most commonly used plant parts gathered were leaves (35%) and flowers (20%). The most commonly collected plants in the investigated area were: Urtica dioica, Thymus longicaulis, Sambucus nigra, and Hypericum perforatum

UTJECAJ EKOLOŠKI PRIHVATLJIVIH TRETMANA NA ANTIOKSIDACIJSKU AKTIVNOST U PLODOVIMA JAGODA TIJEKOM SKLADIŠTENJA

Proper postharvest storage is an effective way to maintain the quality and nutritional values of fruits. The aim of this study was to determine how environmentally friendly postharvest treatments with salicylic acid solution, colloidal silver solution and ozone, affect the antioxidant activity of strawberry fruits (Fragaria x ananassa Duch. cv. Albion) during 7 days of storage at 4°C. The content of ascorbic acid, total phenols and antioxidant activity of strawberry fruits were determined spec-trophotometrically. After 7 days of storage in strawberry fruits treated with all three treatments separately, the contents of ascorbic acid were higher than in the control fruits, supporting the usefulness of these treatments for preserving fruit quality and nutritional value during storage. The treatment with salicylic acid solution showed the most beneficial effect during storage causing a significant increase in the content of ascorbic acid, phenols and antioxidant activity at the end of the storage period.Pravilno skladištenje voća učinkovit je način za održavanje kvalitete i nutritivne vrijednosti plodova nakon berbe. Cilj ovog istraživanja bio je utvrditi kako ekološki prihvatljivi tretmani (otopina salicilne kiseline, otopina koloidnoga srebra i ozon) utječu na ukupnu antioksidacijsku aktivnost u plodovima jagoda (Fragaria x ananassa Duch.) sorte Albion tijekom 7 dana skladištenja pri 4°C. Koncentracije askorbinske kiseline, ukupnih fenola i ukupna antioksidacijska aktivnost u plodovima jagoda određeni su spektrofotometrijski. Svi primijenjeni tretmani prouzročili su povećanje koncentracije askorbinske kiseline u plodovima jagoda, što potvrđuje povoljno djelovanje navedenih tretmana na očuvanje kvalitete i nutritivne vrijednosti plodova. Tretman otopinom salicilne kiseline bio je najučinkovitiji, jer je prouzročio značajno povećanje koncentracije fenola, askorbinske kiseline i ukupne antioksidacijske aktivnosti na kraju perioda skladištenja

Oralna higijena adolescenata u Hrvatskoj tijekom terapije fiksnim ortodontskim napravama: presječna studija

Objective: To investigate the impact of fixed orthodontic treatment on adolescents’ oral hygiene behavior and to examine their food consuption during fixed orthodontic treatment, as well as their motivation to maintain oral hygiene. Materials and methods: This research was carried out in a form of a survey questionnaire consisting of 23 questions. The sample comprised 170 adolescent patients aged from 11 to 19 who underwent the fixed orthodontic treatment at the Orthodontic Clinic of the Zagreb University Hospital Centre. Results: The orthodontic appliance did not interfere with the patients’ maintenance of oral hygiene, but it made the consumption of certain foods more difficult. Most adolescents brushed their teeth twice a day, using medium-soft brushes (35%). Regarding additional oral hygiene aids, 72.4% of the respondents used interdental brushes, more than 50% of the respondents used antiseptic mouthwashes for mouth rinsing, whereas only 31.2% of the tested population used dental floss (4.1% of which daily). The respondents were highly motivated to maintain oral hygiene by their orthodontists (96.5%), but only a small number of the respondents were informed about the importance of an adequate diet while undergoing a fixed orthodontic treatment. Conclusion: Orthodontists should provide their patients with detailed instructions on hygiene maintenance and adequate diet during orthodontic treatment to minimize negative side effects of the fixed orthodontic treatment. Patients should be motivated upon each follow-up examination and encouraged to use as many oral hygiene aids in their daily routines as possible.Svrha rada: Željelo se ispitati kakav je utjecaj fiksne ortodontske terapije na konzumaciju hrane i održavanje oralne higijene kod adolescenata te njihova motiviranost za njezino održavanje. Materijal i metode: U tu je svrhu provedeno istraživanje u obliku anketnog upitnika od 23 pitanja, a sudjelovalo je 170 pacijenata adolescentne dobi od 11 do 19 godina koji su bili na terapiji fiksnim metalnim or-todontskim napravama u Klinici za ortodonciju Kliničkoga bolničkoga centra Zagreb. Rezultati: Istraživanje je pokazalo da ortodontska naprava ne smeta pacijentima u održavanju oralne higijene, ali im otežava konzumaciju određenih namirnica. Najveći broj adolescenata zube pere dva puta na dan i koristi se srednje mekanom četkicom (35 %). Od pomoćnih sredstava 72,4 % ispitanika upotrebljava interdentalne četkice za zube, više od 50 % koristi se antiseptičkom vodicom za ispiranje usne šupljine. Zubnim koncem koristi se tek 31,2 % ispitane populacije (od kojih samo 4,1 % svakodnevno). Ispitanike su uglavnom na održavanje oralne higijene motivirali njihovi ortodonti (96,5 %), ali samo mali dio ispitanika upućen je u važnost pravilne prehrane tijekom fiksne ortodontske terapije. Zaključak: Ortodonti svojim pacijentima trebaju davati detaljne upute o održavanju higijene te o pravilnoj prehrani za trajanja ortodontske terapije kako bi se minimalizirale negativne nuspojave fiksne ortodontske terapije. Pacijenti se trebaju motivirati tijekom svakoga kontrolnog pregleda te poticati da se u svakodnevnoj rutini koriste sa što više pomoćnih sredstav

Use value and breeding potential of terebinth (Pistacia terebinthus L.)

Pistacia terebinthus L. ili smrdljika je listopadni grm ili nisko stablo iz porodice Anacardiaceae. Autohtona je vrsta Mediterana, a u Hrvatskoj je široko rasprostranjena od Istre, preko Hrvatskog primorja, Dalmacije, Dalmatinske zagore do krajnjeg juga. Kserofitna je vrsta, koja raste na osunčanim položajima u makijama i šikarama eumediteranske i submediteranske zone na suhim, toplim, kamenitim i stjenovitim mjestima. Na području prirodne rasprostranjenosti tradicionalno se koristila u prehrani, kao i u liječenju mnogih zdravstvenih tegoba, kao što su respiratorne i urinarne infekcije, želučane tegobe, reumatizam, itd. U novije vrijeme, analize kemijskog sastava vrste upućuju na znatan sadržaj mnogobrojnih aktivnih sastojaka visoke nutritivne vrijednosti i ljekovitog djelovanja (npr. eterična ulja, proteini, tanini, nezasićene masne kiseline, flavonoidi), a najpoznatija je po sadržaju smole iz koje se izdvaja terpentin. Zbog veće otpornosti na sušu, temperaturne ekstreme, bolesti i štetnike te s obzirom na rasprostranjenost na našem području, smrdljika ima najveći potencijal kao podloga za cijepljenje prave tršlje ili pistacije (P. vera L.), cijenjene zbog svojih plodova, što danas predstavlja upotrebu od najvećeg gospodarskog značaja, a prvi nasadi već se podižu u srednjoj Dalmaciji. Najčešći način cijepljenja je okuliranje koje se provodi na dobro razvijenim dvogodišnjim podlogama smrdljike. Izvjesni problem koji se javlja kod proizvodnje podloga je niska klijavost sjemena smrdljike zbog fiziološke i fizikalne dormantnosti, partenokarpije i abortiranja sjemenki. Dostupna znanstvena i stručna literatura kao i rezultati preliminarnih terenskih istraživanja upućuju na postojanje velikog potencijala upotrebe smrdljike u agronomiji, šumarstvu, farmaciji i prehrambenoj industriji.Pistacia terebinthus L. or terebinth is a deciduous shrub or low tree from the Anacardiaceae family. It is a native species of the Mediterranean region. In Croatia it is widespread from Istria through the Croatian coast, Dalmatia and Dalmatian Zagora to the extreme south. It is a xerophytic species that grows in sunny places in maquis and thickets of the eu-Mediterranean and sub-Mediterranean zone on dry, warm, stony, and rocky terrains. In its natural range it has traditionally been used as food and for the treatment of numerous health problems such as respiratory and urinary infections, stomach problems, rheumatism etc. Recently, analyzes of its chemical composition indicate that it contains numerous active ingredients with high nutritional value and medicinal effects (essential oils, proteins, tannins, unsaturated fatty acids, flavonoids, tannins). The terebinth plants are especially known for their resin content, from which turpentine is extracted. Due to its greater resistance to drought, temperature extremes, diseases and pests, and considering its widespread distribution in Croatia, P. terebinthus has the greatest potential as a rootstock for grafting pistachio (P. vera L.), valued for the fruits. The first plantations of. P. vera are already being established in Central Dalmatia. The most common grafting method is chip budding, which is carried out on well-developed biennial rootstocks. A certain problem encountered in rootstock production is the low germination rate of P. terebinthus seeds due to physiological and physical dormancy, parthenocarpy and seed abortion. The available scientific and professional literature, as well as the results of preliminary field research, indicate great potential for the use of P. terebinthus in agronomy, forestry, pharmaceutical, cosmetic and food industries