Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Hellevi Ruokonen is active.

Publication


Featured researches published by Hellevi Ruokonen.


European Journal of Internal Medicine | 2009

Strawberry like gingivitis being the first sign of Wegener's granulomatosis.

Hellevi Ruokonen; Tapani Helve; Johanna Arola; Jarkko Hietanen; Christian Lindqvist; Jaana Hagström

Wegeners granulomatosis (WG) is a rare granulomatous necrotizing vasculitis of small vessels, affecting vascular structures having predilection for upper airways. If untreated WG can be lethal. WG is also known to cause oral mucosal lesions. We report a case of WG that was first diagnosed on oral gingival mucosa. A 51-year old woman was referred to a specialized dentist because of consistent irritative buccal gingival hyperplasia that did not react to conservative and microbial treatment. The lesion was biopsied and the diagnosis was suggestive for WG. Patient was further referred to the Department of Rheumatology and the diagnose of WG was confirmed and treated. The oral lesions cured totally. This case emphasizes the importance to recognize the oral manifestation of WG to get proper medication as soon as possible and avoid serious systemic tissue damage.


Liver Transplantation | 2014

Oral mucosal health in liver transplant recipients and controls

Jaana Helenius-Hietala; Hellevi Ruokonen; Lisa Grönroos; Harri Rissanen; Miira M. Vehkalahti; Liisa Suominen; Helena Isoniemi; Jukka H. Meurman

Immunosuppressive drugs and other medications may predispose patients to oral diseases. Data on oral mucosal health in recipients of liver transplantation (LT) are limited. We, therefore, recruited 84 LT recipients (64 with chronic liver disease and 20 with acute liver failure) for clinical oral examinations in a cross‐sectional, case‐control study. Their oral health had been clinically examined before transplantation. The prevalence of oral mucosal lesions (OMLs) was assessed in groups with different etiologies of liver disease and in groups with different immunosuppressive medications, and these groups were compared to controls selected from a nationwide survey in Finland (n = 252). Risk factors for OMLs were evaluated with logistic regression. OMLs were more frequent in LT recipients versus controls (43% versus 15%, P < 0.001), and the use of steroids raised the prevalence to 53%. Drug‐induced gingival overgrowth was the single most common type of lesion, and its prevalence was significantly higher for patients using cyclosporine A (CSA; 29%) versus patients using tacrolimus (TAC; 5%, P = 0.007); the prevalence was even higher with the simultaneous use of calcium channel blockers and CSA (47%) or TAC (8%, P = 0.002). Lesions with malignant potential such as drug‐induced lichenoid reactions, oral lichen planus–like lesions, leukoplakias, and ulcers occurred in 13% of the patients with chronic liver disease and in 6% of the controls. Every third patient with chronic liver disease had reduced salivary flow, and more than half of all patients were positive for Candida; this risk was higher with steroids. In conclusion, the high frequency of OMLs among LT recipients can be explained not only by immunosuppressive drugs but also by other medications. Because dry mouth affects oral health and OMLs may have the potential for malignant transformation, annual oral examinations are indicated. Liver Transpl 20:72–80, 2014.


WOS | 2014

Oral Mucosal Health in Liver Transplant Recipients and Controls

Jaana Helenius-Hietala; Hellevi Ruokonen; Lisa Grönroos; Harri Rissanen; Miira M. Vehkalahti; Liisa Suominen; Helena Isoniemi; Jukka H. Meurman

Immunosuppressive drugs and other medications may predispose patients to oral diseases. Data on oral mucosal health in recipients of liver transplantation (LT) are limited. We, therefore, recruited 84 LT recipients (64 with chronic liver disease and 20 with acute liver failure) for clinical oral examinations in a cross‐sectional, case‐control study. Their oral health had been clinically examined before transplantation. The prevalence of oral mucosal lesions (OMLs) was assessed in groups with different etiologies of liver disease and in groups with different immunosuppressive medications, and these groups were compared to controls selected from a nationwide survey in Finland (n = 252). Risk factors for OMLs were evaluated with logistic regression. OMLs were more frequent in LT recipients versus controls (43% versus 15%, P < 0.001), and the use of steroids raised the prevalence to 53%. Drug‐induced gingival overgrowth was the single most common type of lesion, and its prevalence was significantly higher for patients using cyclosporine A (CSA; 29%) versus patients using tacrolimus (TAC; 5%, P = 0.007); the prevalence was even higher with the simultaneous use of calcium channel blockers and CSA (47%) or TAC (8%, P = 0.002). Lesions with malignant potential such as drug‐induced lichenoid reactions, oral lichen planus–like lesions, leukoplakias, and ulcers occurred in 13% of the patients with chronic liver disease and in 6% of the controls. Every third patient with chronic liver disease had reduced salivary flow, and more than half of all patients were positive for Candida; this risk was higher with steroids. In conclusion, the high frequency of OMLs among LT recipients can be explained not only by immunosuppressive drugs but also by other medications. Because dry mouth affects oral health and OMLs may have the potential for malignant transformation, annual oral examinations are indicated. Liver Transpl 20:72–80, 2014.


Journal of Periodontology | 2017

Pilot Study on the Genetic Background of an Active Matrix Metalloproteinase-8 Test in Finnish Adolescents

Anna Maria Heikkinen; Teija Raivisto; Kaisa Kettunen; Leena Kovanen; Jari Haukka; Elmira Pakbaznejad Esmaeili; Jessica Elg; Dirk-Rolf Gieselmann; Nilminie Rathnayake; Hellevi Ruokonen; Taina Tervahartiala; Timo Sorsa

BACKGROUND In periodontitis, genetics and smoking play important roles in host immune system response. The aim of this study is to determine whether the genetic background of initial periodontitis and caries could be detected using an active matrix metalloproteinase (aMMP)-8 chairside test in Finnish adolescents. METHODS Forty-seven participants gave approval for analysis of both oral fluid collection and DNA. An aMMP-8 chairside test was performed on participants (adolescents aged 15 to 17 years), and full-mouth clinical parameters of oral health were assessed including periodontal, oral mucosal, and caries status in Eastern Finland from 2014 to 2015. DNA was extracted from oral fluid samples and genotyped for 71 polymorphisms in 29 candidate genes for periodontitis. Results were analyzed using a logistic regression model. P values were corrected for multiple testing using false discovery rate (<0.05). RESULTS aMMP-8 chairside test positivity and three or more ≥4 mm pockets were associated with vitamin D receptor (VDR) (rs2228570, P = 0.002, q = 0.04) and MMP3 (rs520540, rs639752, rs679620, P = 0.0009, 0.003, 0.003, q = 0.04, respectively). None of the other single-nucleotide polymorphisms studied showed a significant association with the aMMP-8 chairside test and at least one caries lesion positivity. CONCLUSION Genetic polymorphisms of MMP3 and VDR are linked to initial periodontitis in Finnish adolescents, and the aMMP-8 chairside test can eventually detect initial periodontitis in young patients with predisposing genetic background.


Liver Transplantation | 2013

Self‐Reported Oral Symptoms and Signs in Liver Transplant Recipients and a Control Population

Jaana Helenius-Hietala; Hellevi Ruokonen; Lisa Grönroos; Harri Rissanen; Liisa Suominen; Helena Isoniemi; Jukka H. Meurman

Recipients of liver transplantation (LT) receive lifelong immunosuppression, which causes side effects. We investigated self‐reported oral symptoms and associated risk factors with the following hypothesis: symptoms and signs would differ between LT recipients of different etiology groups and also between LT recipients and a control population. Eighty‐four LT recipients (64 with chronic liver disease and 20 with acute liver disease) were recruited for clinical oral and salivary examinations (median follow‐up = 5.7 years). A structured questionnaire was used to record subjective oral symptoms. Matched controls (n = 252) came from the National Finnish Health 2000 survey. The prevalence of symptoms was compared between the groups, and the risk factors for oral symptoms were analyzed. Xerostomia was prevalent in 48.4% of the chronic LT recipients and in 42.1% of the acute LT recipients. This subjective feeling of dry mouth was only partly linked to objectively measured hyposalivation. The chronic transplant recipients had significantly lower unstimulated salivary flow rates than the acute transplant recipients (0.34 ± 0.31 versus 0.61 ± 0.49 mL/minute, P = 0.005). Among the chronic transplant recipients, hyposalivation with unstimulated salivary flow was associated with fewer teeth (17.7 ± 8.2 versus 21.9 ± 8.4, P = 0.047) and more dentures (33.3% versus 12.2%, P = not significant). The chronic patients reported significantly more dysphagia than their controls (23.4% versus 11.5%, P = 0.02). Increases in the number of medications increased the symptoms in all groups. In conclusion, dysphagia was significantly more prevalent among the chronic LT recipients versus the controls. The number of medications was a risk factor for dry mouth–related symptoms for both the LT recipients and the controls. The chronic transplant recipients presented with lower salivary flow rates than the acute transplant recipients. Hyposalivation correlated with generally worse oral health among the chronic transplant recipients. These differences between the chronic and acute LT recipients may have been due to differences in their medical conditions due to the different etiologies. Liver Transpl 19:155‐163, 2013.


Quintessence International | 2015

Oral health in predialysis patients with emphasis on periodontal disease.

Nylund K; Jukka H. Meurman; Heikkinen Am; Eero Honkanen; Vesterinen M; Hellevi Ruokonen

OBJECTIVE Oral and periodontal infection load need to be treated in the predialysis stage among chronic kidney disease (CKD) patients in order to avoid later complications in dialysis or transplantation. Periodontal health was studied by specifically comparing diabetic nephropathy patients with those with other kidney disease. METHOD AND MATERIALS This descriptive retrospective study comprised 144 predialysis patients (47 women), aged 23 to 83 years, examined at the Helsinki University Hospital, Finland. Of them, 52 (36%) had diabetic nephropathy. Oral and general health data, Periodontal Inflammatory Burden Index (PIBI), and Total Dental Index (TDI) were recorded from hospital records. Results were analyzed with cross tabulation, Pearson chi-square test, and binary logistic regression with Wald test. RESULTS Of the diabetic nephropathy patients 39%, and of those with high A1C values 36%, respectively, had two or more sites with probing depths ≥ 6 mm compared with 19% in the other CKD group, and 18% of those with lower A1C values. TDI scores were high among 55% of the diabetic nephropathy patients. A1C values ≥ 6.5% associated with moderate periodontitis in 67%, and elevated PIBI in 62%. CONCLUSION High A1C values associated with high oral infection burden indices. Diabetic nephropathy patients had more often high TDI scores and deep periodontal pockets compared with the other CKD patients.


WOS | 2013

Self-Reported Oral Symptoms and Signs in Liver Transplant Recipients and a Control Population

Jaana Helenius-Hietala; Hellevi Ruokonen; Lisa Grönroos; Harri Rissanen; Helena Isoniemi; Jukka H. Meurman; Liisa Suominen

Recipients of liver transplantation (LT) receive lifelong immunosuppression, which causes side effects. We investigated self‐reported oral symptoms and associated risk factors with the following hypothesis: symptoms and signs would differ between LT recipients of different etiology groups and also between LT recipients and a control population. Eighty‐four LT recipients (64 with chronic liver disease and 20 with acute liver disease) were recruited for clinical oral and salivary examinations (median follow‐up = 5.7 years). A structured questionnaire was used to record subjective oral symptoms. Matched controls (n = 252) came from the National Finnish Health 2000 survey. The prevalence of symptoms was compared between the groups, and the risk factors for oral symptoms were analyzed. Xerostomia was prevalent in 48.4% of the chronic LT recipients and in 42.1% of the acute LT recipients. This subjective feeling of dry mouth was only partly linked to objectively measured hyposalivation. The chronic transplant recipients had significantly lower unstimulated salivary flow rates than the acute transplant recipients (0.34 ± 0.31 versus 0.61 ± 0.49 mL/minute, P = 0.005). Among the chronic transplant recipients, hyposalivation with unstimulated salivary flow was associated with fewer teeth (17.7 ± 8.2 versus 21.9 ± 8.4, P = 0.047) and more dentures (33.3% versus 12.2%, P = not significant). The chronic patients reported significantly more dysphagia than their controls (23.4% versus 11.5%, P = 0.02). Increases in the number of medications increased the symptoms in all groups. In conclusion, dysphagia was significantly more prevalent among the chronic LT recipients versus the controls. The number of medications was a risk factor for dry mouth–related symptoms for both the LT recipients and the controls. The chronic transplant recipients presented with lower salivary flow rates than the acute transplant recipients. Hyposalivation correlated with generally worse oral health among the chronic transplant recipients. These differences between the chronic and acute LT recipients may have been due to differences in their medical conditions due to the different etiologies. Liver Transpl 19:155‐163, 2013.


Journal of Periodontology | 2017

Oral Health and Mortality in Patients With Chronic Kidney Disease.

Hellevi Ruokonen; Karita Nylund; Jussi Furuholm; Jukka H. Meurman; Timo Sorsa; Karoliina Kotaniemi; Fernanda Ortiz; Anna Maria Heikkinen

BACKGROUND Factors related to mortality of patients with chronic kidney disease (CKD) were investigated to find out whether oral disease inflammatory burden or different etiology (diabetes nephropathy vs. other etiologies) of CKD could be associated with mortality. METHODS This prospective cohort study comprised 144 adults at the predialysis stage. Clinical oral and radiologic examination was made from 2000 to 2005. Patients were followed up until August 2015 (complete follow-up time: 157 months). Cause of death could be verified from 62 of 65 patients. Clinical health data were combined with mortality records obtained from the Finland national statistics database. Number of teeth, total dental index (TDI), and periodontal inflammatory burden index were calculated to describe degree of oral inflammation. RESULTS Primary causes of death were cardiovascular diseases, infection, and cancer. There was a statistically significant difference in survival between diabetic nephropathy (23.8%) and other patients with CKD (59.9%; log-rank test P <0.001). A Cox regression model showed fewer teeth, higher age, and diabetes mellitus were statistically significant independent risk factors for death. Deceased patients had fewer teeth (P <0.001) and higher TDI (P <0.05). CONCLUSIONS Risk of death was higher among patients with diabetic nephropathy. The deceased had fewer teeth and more oral infections. However, indices used failed to show independent association with survival.


Journal of Periodontology | 2015

Periodontal Inflammatory Burden and Salivary Matrix Metalloproteinase-8 Concentration Among Patients With Chronic Kidney Disease at the Predialysis Stage

Karita Nylund; Jukka H. Meurman; Anna Maria Heikkinen; Eero Honkanen; Vesterinen M; Jussi Furuholm; Taina Tervahartiala; Timo Sorsa; Hellevi Ruokonen

BACKGROUND The aim of the present study is to compare periodontal inflammatory burden related to the salivary matrix metalloproteinase (MMP)-8 concentration among patients with chronic kidney disease (CKD) at the predialysis stage. METHODS Salivary samples from 118 predialysis patients were assayed for MMP-8 by immunofluorometric assay. Of the patients, 43 (36%) had diabetic nephropathy, whereas 75 (64%) had other kidney disease. Clinical and radiographic oral health examination was made at Helsinki University Hospital. Oral and general health data including laboratory findings were recorded from hospital records, and the periodontal inflammatory burden index (PIBI) and the total dental index (TDI) were calculated. Results were analyzed with cross tabulation, Pearson χ(2) test, and Mann-Whitney U test. RESULTS Results included elevated PIBI, increased TDI, and two or more sites with ≥ 6 mm or deeper periodontal pocket, associated with elevated salivary MMP-8 concentrations (P < 0.05 in all associations). The diabetic nephropathy group and patients with high hemoglobin A1c (HbA1c) values (≥ 6.5%, ≥ 48 mmol/mol) exerted slightly elevated median salivary MMP-8 values compared with the other CKD group or regarding patients with HbA1c values < 6.5%, but these differences were not statistically significant. CONCLUSIONS Elevated salivary MMP-8 associated significantly with more severe oral/periodontal inflammatory burden among patients with CKD at the predialysis stage. Thus, salivary MMP-8 analysis could give adjunctive information regarding oral health.


Acta Odontologica Scandinavica | 2017

High percentage of oral lichen planus and lichenoid lesion in oral squamous cell carcinomas

Hellevi Ruokonen; Aino Juurikivi; Timo Kauppila; Anna Maria Heikkinen; Riitta Seppänen-Kaijansinkko

Abstract Objective: Oral lichen planus (OLP) and lichenoid lesions (OLL) are regarded as precursor lesions of oral squamous cell carcinoma (OSCC) with potential for malignant transformation. This potential is not clear due to difficulties in diagnosis of OLP and OLL. Our aim was therefore to evaluate previously identified OLP and OLL as precursor lesions in OSCC and to identify cancer related etiological factors such as smoking and alcohol consumption. Material and methods: We retrospectively reviewed all cases (total 323, comprising 164 females and 159 males) with OSCC treated at the Department of Oral and Maxillofacial Diseases and Surgery, Helsinki University Hospital during 2015. Confirmed by histopathological biopsy, 58 (17.9%) had OLP and 13 had OLL (4.0%) as precursor lesion. Results: Patients with OLP were slightly older than those without it. OLP was more common in females than in males (p < .0001). TN class 1 tumors were more prevalent among patients with OLP or OLL (p = .006) and cancer relapses less common (p = .005). Smoking was less frequent in patients with OLP and OLL (p < .0001). Also alcohol abuse was less frequent among these patients (p < .001). Conclusion: Our findings confirm the importance of active follow-up of all patients with OLP and OLL even in patients who do not fit a traditional high-risk category for OSCC.

Collaboration


Dive into the Hellevi Ruokonen's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Jaana Helenius-Hietala

Helsinki University Central Hospital

View shared research outputs
Top Co-Authors

Avatar

Timo Sorsa

University of Helsinki

View shared research outputs
Top Co-Authors

Avatar

Eero Honkanen

Helsinki University Central Hospital

View shared research outputs
Top Co-Authors

Avatar

Harri Rissanen

Helsinki University Central Hospital

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Liisa Suominen

Helsinki University Central Hospital

View shared research outputs
Researchain Logo
Decentralizing Knowledge