{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T21:26:14Z","timestamp":1790630774645,"version":"4.1.0"},"reference-count":49,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2022,12,15]],"date-time":"2022-12-15T00:00:00Z","timestamp":1671062400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,12,15]],"date-time":"2022-12-15T00:00:00Z","timestamp":1671062400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Universit\u00e4tsklinikum Schleswig-Holstein - Campus Kiel"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Oral Health"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>There is a lack of data on long-term impact of different psychological variables on periodontitis. Aim of the current study was to investigate the impact of psychological factors in patients with chronic periodontitis (CP; according to the 1999 Classification of Periodontal Diseases) to explain adherence to or discontinuation of supportive periodontal therapy (SPT) in a university setting.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A sample of n\u2009=\u2009119 patients were examined in a questionnaire-based, cross-sectional survey. All patients had received active periodontal treatment (APT) and were reevaluated in a university setting (Kiel) before 2016 [T1: start SPT]. Patients who showed sufficient adherence to SPT of\u2009\u2265\u20092\u00a0years (maximum\u2009\u00b1\u20096\u00a0months of deviation between SPT intervals, last visit and questionnaire at T2) were assigned to the adherence group (AG: n\u2009=\u200958), or, if they interrupted SPT or stopped treatment altogether, to the non-adherence group (NAG: n\u2009=\u200961). In addition to dental parameters, we assessed socio-demographic, treatment-related (critical attitudes\/complaints), dental as well as psychological variables (especially psychological attachment, but also dental fear, patient participation style, personality functioning) and examined between-group differences as well as possible mediating factors of non-adherence to treatment continuation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>For both groups we found similar average observation time (NAG\/AG: 15.9(8.9)\/14.9(10.6)years). There were significant differences in age, critical attitudes, dental fear, and patient participation style between the groups. With the help of exploratory sequential mediation models, we found a significant indirect pathway of the impact of attachment anxiety on discontinuation of treatment mediated through dental fear and number of critical attitudes\/complaints.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Considering the limitations, dentists should be aware of personality-related risk-factors such as attachment anxiety as well as their interplay with levels of dental fear and critical attitudes which may influence adherence to SPT.<\/jats:p><jats:p><jats:italic>Trial registration<\/jats:italic>: The clinical trial was retrospectively registered in the DRKS\u2014German Clinical Trials Register (<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/www.drks.de\">https:\/\/www.drks.de<\/jats:ext-link>) with registration DRKS00030092 (26\/08\/2022).<\/jats:p><\/jats:sec>","DOI":"10.1186\/s12903-022-02655-8","type":"journal-article","created":{"date-parts":[[2022,12,15]],"date-time":"2022-12-15T08:03:19Z","timestamp":1671091399000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Periodontal maintenance: individual patient responses and discontinuations"],"prefix":"10.1186","volume":"22","author":[{"given":"Christian","family":"Graetz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johannes C.","family":"Ehrenthal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rebecca","family":"Kowalski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miriam","family":"Cyris","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antje","family":"Geiken","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph E.","family":"D\u00f6rfer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,12,15]]},"reference":[{"issue":"1","key":"2655_CR1","doi-asserted-by":"publisher","first-page":"10","DOI":"10.1111\/j.1600-0757.2011.00413.x","volume":"58","author":"BA Dye","year":"2012","unstructured":"Dye BA. Global periodontal disease epidemiology. Periodontol 2000. 2012;58(1):10\u201325.","journal-title":"Periodontol 2000"},{"issue":"Suppl 20","key":"2655_CR2","doi-asserted-by":"publisher","first-page":"S112","DOI":"10.1111\/jcpe.12943","volume":"45","author":"I Needleman","year":"2018","unstructured":"Needleman I, Garcia R, Gkranias N, Kirkwood KL, Kocher T, Iorio AD, et al. Mean annual attachment, bone level, and tooth loss: a systematic review. J Clin Periodontol. 2018;45(Suppl 20):S112\u201329.","journal-title":"J Clin Periodontol"},{"issue":"3","key":"2655_CR3","doi-asserted-by":"publisher","first-page":"325","DOI":"10.1902\/jop.2012.120069","volume":"84","author":"F Borges Tde","year":"2013","unstructured":"Borges Tde F, Regalo SC, Taba M Jr, Siessere S, Mestriner W Jr, Semprini M. Changes in masticatory performance and quality of life in individuals with chronic periodontitis. J Periodontol. 2013;84(3):325\u201331.","journal-title":"J Periodontol"},{"issue":"4","key":"2655_CR4","doi-asserted-by":"publisher","first-page":"269","DOI":"10.1111\/idj.12381","volume":"68","author":"L Levin","year":"2018","unstructured":"Levin L, Zini A, Levine J, Weiss M, Lev R, Chebath Taub D, et al. Demographic profile, Oral Health Impact Profile and Dental Anxiety Scale in patients with chronic periodontitis: a case\u2013control study. Int Dent J. 2018;68(4):269\u201378.","journal-title":"Int Dent J"},{"issue":"7","key":"2655_CR5","doi-asserted-by":"crossref","first-page":"699","DOI":"10.1111\/jcpe.13118","volume":"46","author":"O Helal","year":"2019","unstructured":"Helal O, Gostemeyer G, Krois J, Fawzy El Sayed K, Graetz C, Schwendicke F. Predictors for tooth loss in periodontitis patients: systematic review and meta-analysis. J Clin Periodontol. 2019;46(7):699\u2013712.","journal-title":"J Clin Periodontol"},{"issue":"Suppl 22","key":"2655_CR6","doi-asserted-by":"publisher","first-page":"4","DOI":"10.1111\/jcpe.13290","volume":"47","author":"M Sanz","year":"2020","unstructured":"Sanz M, Herrera D, Kebschull M, Chapple I, Jepsen S, Beglundh T, et al. Treatment of stage I\u2013III periodontitis\u2014the EFP S3 level clinical practice guideline. J Clin Periodontol. 2020;47(Suppl 22):4\u201360.","journal-title":"J Clin Periodontol"},{"issue":"1","key":"2655_CR7","doi-asserted-by":"publisher","first-page":"190","DOI":"10.1111\/prd.12255","volume":"79","author":"A Mombelli","year":"2019","unstructured":"Mombelli A. Maintenance therapy for teeth and implants. Periodontol 2000. 2019;79(1):190\u20139.","journal-title":"Periodontol 2000"},{"issue":"12","key":"2655_CR8","doi-asserted-by":"publisher","first-page":"2253","DOI":"10.1111\/jdv.15913","volume":"33","author":"L Eicher","year":"2019","unstructured":"Eicher L, Knop M, Aszodi N, Senner S, French LE, Wollenberg A. A systematic review of factors influencing treatment adherence in chronic inflammatory skin disease\u2014strategies for optimizing treatment outcome. J Eur Acad Dermatol Venereol. 2019;33(12):2253\u201363.","journal-title":"J Eur Acad Dermatol Venereol"},{"issue":"1","key":"2655_CR9","doi-asserted-by":"publisher","first-page":"81","DOI":"10.1111\/jcpe.13204","volume":"47","author":"E Amerio","year":"2020","unstructured":"Amerio E, Mainas G, Petrova D, Giner Tarrida L, Nart J, Monje A. Compliance with supportive periodontal\/peri-implant therapy: a systematic review. J Clin Periodontol. 2020;47(1):81\u2013100.","journal-title":"J Clin Periodontol"},{"issue":"4","key":"2655_CR10","doi-asserted-by":"publisher","first-page":"556","DOI":"10.1097\/00006842-200107000-00006","volume":"63","author":"RG Maunder","year":"2001","unstructured":"Maunder RG, Hunter JJ. Attachment and psychosomatic medicine: developmental contributions to stress and disease. Psychosom Med. 2001;63(4):556\u201367.","journal-title":"Psychosom Med"},{"key":"2655_CR11","first-page":"86","volume-title":"Adult attachment: theory, research, and clinical implications","author":"RC Fraley","year":"2004","unstructured":"Fraley RC, Brumbaugh CC. A dynamic system approach to conceptualizing and studying stability and change in attachment security. In: Rholes S, Simpson JA, editors. Adult attachment: theory, research, and clinical implications. New York: Guilford Press; 2004. p. 86\u2013132."},{"issue":"12","key":"2655_CR12","doi-asserted-by":"publisher","first-page":"1087","DOI":"10.1111\/jcpe.12159","volume":"40","author":"C Graetz","year":"2013","unstructured":"Graetz C, Ehrenthal JC, Senf D, Semar K, Herzog W, D\u00f6rfer CE. Influence of psychological attachment patterns on periodontal disease - a pilot study with 310 compliant patients. J Clin Periodontol. 2013;40(12):1087\u201394.","journal-title":"J Clin Periodontol"},{"issue":"1","key":"2655_CR13","doi-asserted-by":"publisher","first-page":"95","DOI":"10.1186\/s12903-021-01457-8","volume":"21","author":"C Graetz","year":"2021","unstructured":"Graetz C, Woeste S, Mrowietz U, Ehrenthal JC. The impact of psychological attachment on the relationship between periodontal health and dental fear in patients with versus without psoriasis: a questionnaire-based, cross-sectional study. BMC Oral Health. 2021;21(1):95.","journal-title":"BMC Oral Health"},{"key":"2655_CR14","doi-asserted-by":"crossref","unstructured":"Beaven A, Boullin P, Penlington C. Do psychological attachment styles influence dental anxiety and dental attendance? Br Dent J. 2022;06:1\u20135","DOI":"10.1038\/s41415-022-4353-0"},{"issue":"1","key":"2655_CR15","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1902\/annals.1999.4.1.1","volume":"4","author":"GC Armitage","year":"1999","unstructured":"Armitage GC. Development of a classification system for periodontal diseases and conditions. Ann Periodontol. 1999;4(1):1\u20136.","journal-title":"Ann Periodontol"},{"issue":"Suppl 20","key":"2655_CR16","first-page":"S1","volume":"45","author":"JG Caton","year":"2018","unstructured":"Caton JG, Armitage G, Berglundh T, Chapple ILC, Jepsen S, Kornman KS, et al. A new classification scheme for periodontal and peri-implant diseases and conditions\u2014introduction and key changes from the 1999 classification. J Clin Periodontol. 2018;45(Suppl 20):S1\u20138.","journal-title":"J Clin Periodontol"},{"issue":"Suppl 20","key":"2655_CR17","doi-asserted-by":"publisher","first-page":"S149","DOI":"10.1111\/jcpe.12945","volume":"45","author":"MS Tonetti","year":"2018","unstructured":"Tonetti MS, Greenwell H, Kornman KS. Staging and grading of periodontitis: framework and proposal of a new classification and case definition. J Clin Periodontol. 2018;45(Suppl 20):S149\u201361.","journal-title":"J Clin Periodontol"},{"key":"2655_CR18","doi-asserted-by":"publisher","first-page":"103307","DOI":"10.1016\/j.jdent.2020.103307","volume":"94","author":"C Graetz","year":"2020","unstructured":"Graetz C, Baumer A, Eickholz P, Kocher T, Petsos H, Pretzl B, et al. Long-term tooth retention in periodontitis patients in four German university centres. J Dent. 2020;94:103307.","journal-title":"J Dent"},{"issue":"4","key":"2655_CR19","doi-asserted-by":"publisher","first-page":"419","DOI":"10.1016\/j.jpsychores.2009.08.006","volume":"69","author":"P Ravitz","year":"2010","unstructured":"Ravitz P, Maunder R, Hunter J, Sthankiya B, Lancee W. Adult attachment measures: a 25-year review. J Psychosom Res. 2010;69(4):419\u201332.","journal-title":"J Psychosom Res"},{"issue":"2","key":"2655_CR20","doi-asserted-by":"publisher","first-page":"350","DOI":"10.1037\/0022-3514.78.2.350","volume":"78","author":"RC Fraley","year":"2000","unstructured":"Fraley RC, Waller NG, Brennan KA. An item response theory analysis of self-report measures of adult attachment. J Pers Soc Psychol. 2000;78(2):350\u201365.","journal-title":"J Pers Soc Psychol"},{"issue":"6","key":"2655_CR21","doi-asserted-by":"publisher","first-page":"215","DOI":"10.1055\/s-2008-1067425","volume":"59","author":"JC Ehrenthal","year":"2009","unstructured":"Ehrenthal JC, Dinger U, Lamla A, Funken B, Schauenburg H. Evaluation of the German version of the attachment questionnaire \u201cExperiences in Close Relationships-Revised\u201d (ECR-RD). Psychother Psychosom Med Psychol. 2009;59(6):215\u201323.","journal-title":"Psychother Psychosom Med Psychol"},{"issue":"1","key":"2655_CR22","doi-asserted-by":"publisher","first-page":"140","DOI":"10.1186\/s40359-021-00637-z","volume":"9","author":"JC Ehrenthal","year":"2021","unstructured":"Ehrenthal JC, Zimmermann J, Brenk-Franz K, Dinger U, Schauenburg H, Brahler E, et al. Evaluation of a short version of the Experiences in Close Relationships-Revised questionnaire (ECR-RD8): results from a representative German sample. BMC Psychol. 2021;9(1):140.","journal-title":"BMC Psychol"},{"issue":"3","key":"2655_CR23","doi-asserted-by":"publisher","first-page":"262","DOI":"10.13109\/zptm.2015.61.3.262","volume":"61","author":"JC Ehrenthal","year":"2015","unstructured":"Ehrenthal JC, Dinger U, Schauenburg H, Horsch L, Dahlbender RW, Gierk B. Development of a 12-item version of the OPD-Structure Questionnaire (OPD-SQS). Zeitschrift fur Psychosomatische Medizin und Psychotherapie. 2015;61(3):262\u201374.","journal-title":"Zeitschrift fur Psychosomatische Medizin und Psychotherapie"},{"issue":"3","key":"2655_CR24","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1111\/j.1369-7625.2009.00584.x","volume":"13","author":"D Simon","year":"2010","unstructured":"Simon D, Kriston L, Loh A, Spies C, Scheibler F, Wills C, et al. Confirmatory factor analysis and recommendations for improvement of the Autonomy-Preference-Index (API). Health Expect. 2010;13(3):234\u201343.","journal-title":"Health Expect"},{"key":"2655_CR25","first-page":"775","volume":"108","author":"P J\u00f6hren","year":"1999","unstructured":"J\u00f6hren P. Validierung eines Fragebogens zur Erkennung von Zahnbehandlungsangst. Zahn\u00e4rztl Welt. 1999;108:775\u20138 (in German).","journal-title":"Zahn\u00e4rztl Welt"},{"issue":"2","key":"2655_CR26","doi-asserted-by":"publisher","first-page":"163","DOI":"10.1016\/j.jpsychores.2004.09.006","volume":"58","author":"B Lowe","year":"2005","unstructured":"Lowe B, Kroenke K, Grafe K. Detecting and monitoring depression with a two-item questionnaire (PHQ-2). J Psychosom Res. 2005;58(2):163\u201371.","journal-title":"J Psychosom Res"},{"issue":"10","key":"2655_CR27","doi-asserted-by":"publisher","first-page":"1092","DOI":"10.1001\/archinte.166.10.1092","volume":"166","author":"RL Spitzer","year":"2006","unstructured":"Spitzer RL, Kroenke K, Williams JB, Lowe B. A brief measure for assessing generalized anxiety disorder: the GAD-7. Arch Intern Med. 2006;166(10):1092\u20137.","journal-title":"Arch Intern Med"},{"issue":"1","key":"2655_CR28","first-page":"7","volume":"1","author":"NP Lang","year":"2003","unstructured":"Lang NP, Tonetti MS. Periodontal risk assessment (PRA) for patients in supportive periodontal therapy (SPT). Oral Health Prev Dent. 2003;1(1):7\u201316.","journal-title":"Oral Health Prev Dent"},{"issue":"3","key":"2655_CR29","doi-asserted-by":"publisher","first-page":"279","DOI":"10.1111\/cdoe.12005","volume":"41","author":"JM Armfield","year":"2013","unstructured":"Armfield JM. What goes around comes around: revisiting the hypothesized vicious cycle of dental fear and avoidance. Community Dent Oral Epidemiol. 2013;41(3):279\u201387.","journal-title":"Community Dent Oral Epidemiol"},{"issue":"11","key":"2655_CR30","doi-asserted-by":"publisher","first-page":"814","DOI":"10.1016\/j.adaj.2017.06.019","volume":"148","author":"LM Wambier","year":"2017","unstructured":"Wambier LM, de Geus JL, Boing TF, Chibinski ACR, Wambier DS, Rego RO, et al. Intrapocket topical anesthetic versus injected anesthetic for pain control during scaling and root planing in adult patients: Systematic review and meta-analysis. J Am Dent Assoc. 2017;148(11):814-24.e2.","journal-title":"J Am Dent Assoc"},{"issue":"5","key":"2655_CR31","doi-asserted-by":"publisher","first-page":"1089","DOI":"10.1037\/pspp0000437","volume":"123","author":"X Zhang","year":"2022","unstructured":"Zhang X, Li J, Xie F, Chen X, Xu W, Hudson NW. The relationship between adult attachment and mental health: a meta-analysis. J Pers Soc Psychol. 2022;123(5):1089\u2013137.","journal-title":"J Pers Soc Psychol"},{"issue":"1\u20132","key":"2655_CR32","doi-asserted-by":"publisher","first-page":"27","DOI":"10.1016\/j.pain.2006.07.020","volume":"127","author":"LA McWilliams","year":"2007","unstructured":"McWilliams LA, Asmundson GJ. The relationship of adult attachment dimensions to pain-related fear, hypervigilance, and catastrophizing. Pain. 2007;127(1\u20132):27\u201334.","journal-title":"Pain"},{"issue":"14","key":"2655_CR33","doi-asserted-by":"publisher","first-page":"2101","DOI":"10.1001\/archinte.160.14.2101","volume":"160","author":"MR DiMatteo","year":"2000","unstructured":"DiMatteo MR, Lepper HS, Croghan TW. Depression is a risk factor for noncompliance with medical treatment meta-analysis of the effects of anxiety and depression on patient adherence. Arch Intern Med. 2000;160(14):2101\u20137.","journal-title":"Arch Intern Med"},{"issue":"3","key":"2655_CR34","doi-asserted-by":"publisher","first-page":"223","DOI":"10.1080\/14616730902814762","volume":"11","author":"MJ Bakermans-Kranenburg","year":"2009","unstructured":"Bakermans-Kranenburg MJ, van IJzendoorn MH. The first 10,000 Adult Attachment Interviews: distributions of adult attachment representations in clinical and non-clinical groups. Attach Hum Dev. 2009;11(3):223\u201363.","journal-title":"Attach Hum Dev"},{"issue":"4","key":"2655_CR35","doi-asserted-by":"publisher","first-page":"446","DOI":"10.1037\/a0020061","volume":"29","author":"LA McWilliams","year":"2010","unstructured":"McWilliams LA, Bailey SJ. Associations between adult attachment ratings and health conditions: evidence from the National Comorbidity Survey Replication. Health Psychol. 2010;29(4):446\u201353.","journal-title":"Health Psychol"},{"issue":"Suppl 22","key":"2655_CR36","doi-asserted-by":"publisher","first-page":"90","DOI":"10.1111\/jcpe.13240","volume":"47","author":"CA Ramseier","year":"2020","unstructured":"Ramseier CA, Woelber JP, Kitzmann J, Detzen L, Carra MC, Bouchard P. Impact of risk factor control interventions for smoking cessation and promotion of healthy lifestyles in patients with periodontitis: a systematic review. J Clin Periodontol. 2020;47(Suppl 22):90\u2013106.","journal-title":"J Clin Periodontol"},{"issue":"2","key":"2655_CR37","doi-asserted-by":"publisher","first-page":"77","DOI":"10.1023\/A:1024515519160","volume":"27","author":"M Mikulincer","year":"2003","unstructured":"Mikulincer M, Shaver PR, Pereg D. Attachment theory and affect regulation: the dynamics, development, and cognitive consequences of attachment-related strategies. Motiv Emot. 2003;27(2):77\u2013102.","journal-title":"Motiv Emot"},{"issue":"9","key":"2655_CR38","doi-asserted-by":"publisher","first-page":"1598","DOI":"10.1902\/jop.2006.050358","volume":"77","author":"SL Segelnick","year":"2006","unstructured":"Segelnick SL, Weinberg MA. Reevaluation of initial therapy: when is the appropriate time? J Periodontol. 2006;77(9):1598\u2013601.","journal-title":"J Periodontol"},{"issue":"1","key":"2655_CR39","doi-asserted-by":"publisher","first-page":"50","DOI":"10.4103\/jisp.jisp_254_16","volume":"21","author":"R Shah","year":"2017","unstructured":"Shah R, Thomas R, Bhandari S, Mehta DS. Influence of various factors on patient compliance after periodontal therapy: a pilot study. J Indian Soc Periodontol. 2017;21(1):50\u20134.","journal-title":"J Indian Soc Periodontol"},{"issue":"2","key":"2655_CR40","doi-asserted-by":"publisher","first-page":"193","DOI":"10.1177\/0146167210392789","volume":"37","author":"M Del Giudice","year":"2011","unstructured":"Del Giudice M. Sex differences in romantic attachment: a meta-analysis. Pers Soc Psychol Bull. 2011;37(2):193\u2013214.","journal-title":"Pers Soc Psychol Bull"},{"issue":"2","key":"2655_CR41","doi-asserted-by":"publisher","first-page":"171","DOI":"10.1111\/j.1467-6494.2012.00793.x","volume":"81","author":"WJ Chopik","year":"2013","unstructured":"Chopik WJ, Edelstein RS, Fraley RC. From the cradle to the grave: age differences in attachment from early adulthood to old age. J Pers. 2013;81(2):171\u201383.","journal-title":"J Pers"},{"issue":"4","key":"2655_CR42","doi-asserted-by":"publisher","first-page":"334","DOI":"10.1111\/j.1600-051X.2010.01545.x","volume":"37","author":"LK O'Dowd","year":"2010","unstructured":"O\u2019Dowd LK, Durham J, McCracken GI, Preshaw PM. Patients\u2019 experiences of the impact of periodontal disease. J Clin Periodontol. 2010;37(4):334\u20139.","journal-title":"J Clin Periodontol"},{"issue":"2","key":"2655_CR43","doi-asserted-by":"publisher","first-page":"178","DOI":"10.1097\/PSY.0b013e31827d221b","volume":"75","author":"G Tsakos","year":"2013","unstructured":"Tsakos G, Sabbah W, Chandola T, Newton T, Kawachi I, Aida J, et al. Social relationships and oral health among adults aged 60 years or older. Psychosom Med. 2013;75(2):178\u201386.","journal-title":"Psychosom Med"},{"issue":"2","key":"2655_CR44","doi-asserted-by":"publisher","first-page":"224","DOI":"10.1902\/jop.2008.070344","volume":"79","author":"RR Patel","year":"2008","unstructured":"Patel RR, Richards PS, Inglehart MR. Periodontal health, quality of life, and smiling patterns\u2014an exploration. J Periodontol. 2008;79(2):224\u201331.","journal-title":"J Periodontol"},{"issue":"3","key":"2655_CR45","first-page":"215","volume":"34","author":"A Soolari","year":"2003","unstructured":"Soolari A, Rokn AR. Adherence to periodontal maintenance in Tehran, Iran. A 7-year retrospective study. Quintessence Int. 2003;34(3):215\u20139.","journal-title":"Quintessence Int"},{"issue":"4","key":"2655_CR46","doi-asserted-by":"publisher","first-page":"311","DOI":"10.1902\/jop.1993.64.4.311","volume":"64","author":"TG Wilson Jr","year":"1993","unstructured":"Wilson TG Jr, Hale S, Temple R. The results of efforts to improve compliance with supportive periodontal treatment in a private practice. J Periodontol. 1993;64(4):311\u20134.","journal-title":"J Periodontol"},{"issue":"3","key":"2655_CR47","doi-asserted-by":"publisher","first-page":"351","DOI":"10.1111\/jcpe.13252","volume":"47","author":"SK Sonnenschein","year":"2020","unstructured":"Sonnenschein SK, Kohnen R, Ruetters M, Krisam J, Kim TS. Adherence to long-term supportive periodontal therapy in groups with different periodontal risk profiles. J Clin Periodontol. 2020;47(3):351\u201361.","journal-title":"J Clin Periodontol"},{"issue":"9","key":"2655_CR48","doi-asserted-by":"publisher","first-page":"908","DOI":"10.1111\/jcpe.13157","volume":"46","author":"C Graetz","year":"2019","unstructured":"Graetz C, Mann L, Krois J, S\u00e4lzer S, Kahl M, Springer C, et al. Comparison of periodontitis patients\u2019 classification in the 2018 versus 1999 classification. J Clin Periodontol. 2019;46(9):908\u201317.","journal-title":"J Clin Periodontol"},{"issue":"8","key":"2655_CR49","doi-asserted-by":"publisher","first-page":"952","DOI":"10.1111\/jcpe.13324","volume":"47","author":"C Graetz","year":"2020","unstructured":"Graetz C, Schwalbach M, Seidel M, Geiken A, Schwendicke F. Oral health-related quality of life impacts are low 27 years after periodontal therapy. J Clin Periodontol. 2020;47(8):952\u201361.","journal-title":"J Clin Periodontol"}],"container-title":["BMC Oral Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12903-022-02655-8.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12903-022-02655-8\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12903-022-02655-8.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,3]],"date-time":"2023-12-03T01:33:26Z","timestamp":1701567206000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcoralhealth.biomedcentral.com\/articles\/10.1186\/s12903-022-02655-8"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,12,15]]},"references-count":49,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2022,12]]}},"alternative-id":["2655"],"URL":"https:\/\/doi.org\/10.1186\/s12903-022-02655-8","relation":{},"ISSN":["1472-6831"],"issn-type":[{"value":"1472-6831","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,12,15]]},"assertion":[{"value":"18 August 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"8 December 2022","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"15 December 2022","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"All procedures were performed in accordance with the ethical standards of the institutional and national research committees (Kiel IRB: D566\/17), as well as the 1964 Declaration of Helsinki and their more recent versions, and were approved by the ethics committee of the medical faculty of the Christian-Albrechts-University of Kiel. Before starting the study, verbal and written information about the study protocol were given to the participants and they had to provide written informed consent before enrollment.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"Author C.G., J.C.E., R.K., M.C., A.G. and C.E.D. declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"610"}}