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Objective: Due to the consideration that oral/dental health is an important part of general health, well-being, and an individual’s quality of life, the need for appropriate instruments assessing oral health-related quality of life is emphasized. This study aimed to evaluate the psychometric properties of the Oral health-related quality of life questionnaire consisting of 14 questions among the Macedonian language-speaking adults (OHIP-MAC 14). Material and methods: A total of 270 adults participated in the study. The reliability of the questionnaire was examined by testing the internal consistency and reproducibility (test-retest). The responsiveness of the instrument was tested by computing the pre-intervention and post-intervention OHIP-14 scores using the paired t-test followed by the determination of the effect-size. The two aspects of the construct validity were evaluated: concurrent validity and discriminative validity. Results: A concurrent validity analysis confirmed that the instrument performed well. Discriminative validity also confirmed good psychometric properties (P<0.01). The ICC statistics and the Cronbach alpha coefficients indicated the appropriate reliability of the instrument for the included groups of participants. The responsiveness of the questionnaire was also acceptable (P<0.01) demonstrating the large effect-size of 1.43. Conclusion: The OHIP 14 MAC showed acceptable psychometric properties and can be recommended as a valuable instrument in assessments of the Oral health-related quality of life in the Republic of North Macedonia., Svrha istraživanja: S obzirom na to da je oralno/dentalno zdravlje važan dio općega zdravlja te dobrobiti i kvalitete života pojedinca, ističe se potreba za odgovarajućim instrumentima za procjenu kvalitete života povezane s oralnim zdravljem. Cilj ovog istraživanja bio je procijeniti psihometrijska svojstva upitnika o kvaliteti života povezanog s oralnim zdravljem koji se sastoji od 14 pitanja među odraslim osobama koje govore makedonskim jezikom (OHIP-MAC 14). Materijali i metode: U istraživanju je sudjelovalo ukupno 270 odraslih osoba. Pouzdanost upitnika analizirana je ispitivanjem unutarnje konzistentnosti i ponovljivosti (test-retest). Responzivnost instrumenta testirana je izračunavanjem rezultata OHIPa-14 prije intervencije i poslije nje korištenjem uparenoga t-testa nakon čega je slijedilo određivanje veličine učinka. Procijenjena su dva aspekta valjanosti konstrukta – konkurentna valjanost i diskriminirajuća valjanost.Rezultati: Konkurentna analiza valjanosti potvrdila je da je instrument dobro funkcionirao. Diskriminacijska valjanost također je potvrdila dobra psihome-trijska svojstva (P < 0,01). ICC statistika i Cronbachovi alfa koeficijenti upućivali su na odgovarajuću pouzdanost instrumenta za uključene skupine sudionika. Pokazujući veliku veličinu učinka od 1,43, responzivnost upitnika također je bila prihvatljiva (P < 0,01). Zaključak: OHIP 14 MAC pokazao je pri-hvatljiva psihometrijska svojstva i može se preporučiti kao vrijedan instrument u procjeni kvalitete života povezane s oralnim zdravljem u Republici Sjevernoj Makedoniji.

Objectives: To compare the frequency of patients' oral health problems and prevention needs among Slovenian and international dentists with the aim to validate the four oral health-related quality of life (OHRQoL) dimensions across six clinical dental fields in all World Health Organization (WHO) regions. Methods: An anonymous electronic survey in the English language was designed using Qualtrics software. A probability sampling for Slovenia and a convenience sampling strategy for dentist recruitment was applied for 31 countries. Dentists engaged in six dental fields were asked to categorize their patients' oral health problems and prevention needs into the four OHRQoL dimensions (Oral Function, Orofacial Pain, Orofacial Appearance, and Psychosocial Impact). Proportions of patients' problems and prevention needs were calculated together with the significance of Slovenian and international dentists' differences based on dental fields and WHO regions. Results: Dentists (n=1,580) from 32 countries completed the survey. There were 223 Slovenian dentists (females: 68%) with a mean age (SD) of 41 (10.6) years and 1,358 international dentists (females: 51%) with a mean age (SD) of 38 (10.4). Pain-related problems and prevention needs were the most prevalent among all six dental fields reported by dentists; Slovenian (37%) and 31 countries (45%). According to Cohen, differences between Slovenia, the broader European Region, and 31 countries were considered non-significant (<0.1). Conclusion: According to the dentists' responses, the frequency of patients' oral health problems and prevention needs are proportionate between Slovenia and 31 countries, regionally and globally. The four OHRQoL dimensions can be considered universal across all dental fields.