Academic article

• Dorina Sula Thelen; Ingrid Gramstad; Mahkameh Nicole Aria et al. (2026). Traumatic Dental Injuries Among Young Orthodontic Patients in Public Dental Health Service: Patterns of Occurrence and Referral Routines. (external link)
• Isabell Johnsen; Asgeir Bårdsen; Sivakami Rethnam Haug (2023). Impact of Case Difficulty, Endodontic Mishaps, and Instrumentation Method on Endodontic Treatment Outcome and Quality of Life: A Four-Year Follow-up Study. (external link)
• Madeleine Misje Roman Beyene; Asgeir Bårdsen; Kristin S. Klock et al. (2023). Orthodontic management of traumatic dental injuries in Norway and orthodontists' perceptions of referral routines: A quality assurance survey. (external link)
• Siv Else Kristine Rosendorf Kvinnsland; Sølve Hellem; Inge Fristad et al. (2023). Natriumhypokloritt og kompliksasjoner i odontologisk praksis. (external link)
• Hanne Quist Christensen; Brita Ringereide Linde; Asgeir Bårdsen et al. (2022). Influence of dental education on adoption and integration of technological aids in the delivery of endodontic care by dental practitioners: a survey. (external link)
• Ali Mohamed RW; Manal Mustafa; Asgeir Bårdsen et al. (2021). Differential Responses of Human Dental Pulp Stromal Cells to Bioceramic Materials: A Comparative In Vitro Study. (external link)
• Sivakami Rethnam Haug; Brita Ringereide Linde; Hanne Quist Christensen et al. (2020). An investigation into security, self-confidence and gender differences related to undergraduate education in Endodontics. (external link)
• Magnus Holmøy Bratteberg; Dorina Sula Thelen; Kristin Klock et al. (2020). Traumatic dental injuries and pulp sequelae in an adolescent population. (external link)
• Mohamed Abdel-Raouf Abdel-Waha Ali; Manal Mustafa; Asgeir Bårdsen et al. (2019). Fracture resistance of simulated immature teeth treated with a regenerative endodontic protocol.. (external link)
• Mohamed R. W. Ali; Manal Mustafa; Asgeir Bårdsen et al. (2019). Tricalcium silicate cements: osteogenic and angiogenic responses of human bone marrow stem cells. (external link)
• Magnus Holmøy Bratteberg; Dorina Sula Thelen; Kristin Klock et al. (2019). Traumatic dental injuries and experiences along the life course - a study among 16-yr-old pupils in western Norway. (external link)
• Sebastian Stenhagen; Haakon Skeie; Asgeir Bårdsen et al. (2019). Influence of the coronal restoration on the outcome of endodontically treated teeth. (external link)
• Magnus Holmøy Bratteberg; Dorina Sula Thelen; Kristin Klock et al. (2018). Traumatic dental injuries : prevalence and severity among 16-year-old pupils in western Norway. (external link)
• Sivakami Rethnam Haug; Ane F. Solfjeld; Line E. Ranheim et al. (2018). Impact of Case Difficulty on Endodontic Mishaps in an Undergraduate Student Clinic. (external link)
• Marit Slåttelid Skeie; Trine Evjensvold; Thu Hue Hoff et al. (2015). Traumatic dental injuries as reported during school hours in Bergen. (external link)
• Claus Ungerechts; Asgeir Bårdsen; Inge Fristad (2014). Instrument fracture in root canals - where, why, when and what? A study from a student clinic. (external link)
• Ray Masumo; Nancy Birungi; Asgeir Bårdsen et al. (2014). Impact of low birthweight on early childhood caries in 6-36 months old infants in Uganda: A cross-sectional study. (external link)
• Ray Masumo; Asgeir Bårdsen; Kijakazi Obed Mashoto et al. (2013). Feeding practice among 6-36 months old children in Tanzania and Uganda: Reliability and relationship with early childhood caries, ECC. (external link)
• Vilhjalmur Helgi Vilhjalmsson; Kristin Klock; Kjell Steinar Størksen et al. (2013). Radiological evaluation of single implants in maxillary anterior sites with special emphasis on their relation to adjacent teet - a 3-year follow-up study. (external link)
• Tine Birkeland Sivertsen; Vilhjalmur Helgi Vilhjalmsson; Inge Fristad et al. (2013). Endodontisk behandling av umodne permanente tenner. (external link)
• Per Christian Tronesvold; Stian Bremvåg Sundli; Inge Fristad et al. (2013). Diagnoseavvik i endodontisk behandling - en studie basert på avviksregistrering. (external link)
• Ray Masumo; Asgeir Bårdsen; Anne Nordrehaug Åstrøm (2013). Developmental defects of enamel in primary teeth and association with early life course events: a study of 6-36 month old children in Manyara, Tanzania. (external link)
• Sivakami Rethnam Haug; Inge Fristad; Marit Slåttelid Skeie et al. (2013). Biologiske prinsipp for behandling av umodne permanente tenner med skadet pulpa. (external link)
• Sivakami Rethnam Haug; Inge Fristad; Marit Slåttelid Skeie et al. (2012). Biologiske prinsipp for behandling av umodne permanente tenner med pulpaskade. (external link)
• Ray Masumo; Asgeir Bårdsen; Kijakazi Obed Mashoto et al. (2012). Prevalence and socio-behavioral influence of early childhood caries, ECC, and feeding habits among 6-36 months old children in Uganda and Tanzania. (external link)
• Ray Masumo; Asgeir Bårdsen; Kijakazi Obed Mashoto et al. (2012). Child-and family impacts on infants' oral condition in Tanzania and Uganda-a cross sectional study. (external link)
• Dorina Sula Thelen; Tordis Agnete Trovik; Asgeir Bårdsen (2011). Impact of traumatic dental injuries with unmet treatment need on daily life among Albanian adolescents: a case-control study. (external link)
• Vilhjalmur Helgi Vilhjalmsson; Gro C. Knudsen; Bjarte Grung et al. (2011). Dental auto-transplantation to anterior maxillary sites. (external link)
• Dorina Sula Thelen; Asgeir Bårdsen; Anne Nordrehaug Åstrøm (2011). Applicability of an Albanian version of the OIDP in an adolescent population. (external link)
• Vilhjalmur Helgi Vilhjalmsson; Kristin Klock; Kjell Steinar Størksen et al. (2011). Aesthetics of implant-supported single anterior maxillary crowns evaluated by objective indices and participants' perceptions. (external link)
• Siv Rosendorf Kvinnsland; Asgeir Bårdsen; Inge Fristad (2010). Apexogenesis after initial root canal treatment of an immature maxillary incisor - a case report. (external link)
• Dorina Sula Thelen; Asgeir Bårdsen (2010). Traumatic dental injuries in an urban adolescent population in Tirana, Albania. (external link)
• David G. Pendrys; Ola Haugejorden; Asgeir Bårdsen et al. (2010). The risk of enamel fluorosis and caries among Norwegian children. Implication for Norway and the United States. (external link)
• Marit Slåttelid Skeie; Esther Birgitte Audestad; Asgeir Bårdsen (2010). Traumatic dental injuries - knowledge and awareness among present and prospective teachers in selected urban and rural areas of Norway. (external link)
• Ole Iden; Asgeir Bårdsen; Inge Fristad (2010). Feilslag ved lokalanestesi - mekanismer, årsaker og strategier. (external link)
• Ole Iden; Asgeir Bårdsen; Inge Fristad (2009). Temporære materialer og lekkasje i forbindelse med endodontisk behandling. (external link)
• Inge Fristad; Asgeir Bårdsen (2009). Sankt Elm – en ny skytshelgen i endodonti?. (external link)
• Siv Rosendorf Kvinnsland; Asgeir Bårdsen; Inge Fristad (2009). Prioner og endodonti - engangs- eller flergangsbruk av rotkanalinstrumenter?. (external link)
• Hanne Haukeland Hansen; Camilla Eldrup Henriksen; Inge Fristad et al. (2008). Infeksjonsrelaterte endodontiske eksaserbasjoner - en studie basert på avviksregistrering. (external link)
• Irene Skau; Asgeir Bårdsen; Jostein Grytten (2007). Spesialistpraksis i endodonti 2007. (external link)
• Jian Ping Ruan; Asgeir Bårdsen; Anne Nordrehaug Åstrøm et al. (2007). Dental fluorosis in children in areas with fluoride-polluted air, high-fluoride water, and low-fluoride water as well as low-fluoride air: A study of deciduous and permanent teeth in the Shaanxi province, China. (external link)
• Hege Hekland; Inge Fristad; Asgeir Bårdsen (2006). Pulpainflammasjon og apikal rotresorpsjon. (external link)
• Fantaye Wondwossen; Anne Nordrehaug Åstrøm; Kjell Bjorvatn et al. (2006). Sociodemographic and behavioural correlates of severe dental fluorosis. (external link)
• Nils Skaug; Trond Inge Berge; Asgeir Bårdsen (2005). Akutte infeksjoner. (external link)
• Jian Ping Ruan; Zhuang-Qun Yang; Zhi-Lun Wang et al. (2005). Dental fluorosis and dental caries in permanent teeth: rural schoolchildren in high-fluoride areas in the Shaanxi province, China. (external link)
• Jian Ping Ruan; Zhi-Lun Wang; Zhuang-Qun Yang et al. (2005). Dental fluorosis in primary teeth: a study in rural schoolchildren in Shaanxi Peovince, China. (external link)
• Fantaye Wondwossen; Anne Nordrehaug Åstrøm; Kjell Bjorvatn et al. (2004). The relationship between dental caries and dental fluorosis in areas with moderate- and high-fluoride drinking water in Ethiopia. (external link)
• Elisabeth Haugarvoll Helland; Inge Fristad; Asgeir Bårdsen et al. (2003). Avviksregistrering i endodonti - illustrert med 13 kasus fra en studentklinikk. (external link)
• Fantaye Wondwossen; Anne-Kristine Nodrehaug Åstrøm; Asgeir Bårdsen et al. (2003). Perception of dental fluorosis amongst Ethiopian children and their mothers. (external link)
• Wondwossen Fantaye; Anne-Kristine Nodrehaug Åstrøm; Asgeir Bårdsen et al. (2002). Perception of dental fluorosis among adolescents in two urban areas of Ethiopia. (external link)
• Inge Fristad; Asgeir Bårdsen; Gro Knudsen et al. (2002). Prodromal herpes zoster - a diagnostic challenge in endodontics. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen (2002). Grunnvann og helse. Refleksjoner på grunnlag av analyse av vannprøver fra Hordaland og Vestfold. (external link)
• Inge Fristad; Signe Omdal Hagen; Asgeir Bårdsen et al. (2000). Lateral breakdown of nonendodontic origin adjacent to maxillary left incisors. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn; Kari Sand et al. (1999). Seasonal variations of fluoride content in ground water from wells drilled in bedrock. (external link)
• Asgeir Bårdsen; Kristin Solveig Klock; Kjell Bjorvatn (1999). Dental fluorosis in selected high- and low-fluoride areas of Norway. (external link)
• Asgeir Bårdsen; Kristin Klock; Kjell Bjorvatn (1999). Dental fluorosis among persons exposed to high- and low-fluoride drinking water in western Norway. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1998). Risk periods in the development of dental fluorosis. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen (1997). Grunnvann og helse. Refleksjoner av analyse av vannprøver fra Hordaland og Vestfold. (external link)
• Kjell Bjorvatn; A. Bårdsen; Clemens Reimann et al. (1997). Grunnvann og helse - refleksjoner på grunnlag av analyse av vannprøver fra Hordaland og Vestfold. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn; Knut A. Selvig (1996). Variability in fluoride content of subsurface water reservoirs. (external link)
• C Reimann; GEM Hall; U Slewers et al. (1995). Trace element content of 150 hardrock groundwater samples from the surroundings of Bergen and Oslo. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen; A.H. Thorkildsberg et al. (1994). Fluorid i norsk grunnvann: en ukjent helsefaktor. (external link)

Academic book chapter

• A Kvalheim; Kjell Bjorvatn; Asgeir Bårdsen et al. (1999). Significance of elevation on the fluoride binding capacity of Ethiopian soils. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen; Redda Tekle-Heimanot (1999). Defluoridation of drinking water by the use of clay/soil. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1999). Dental fluorosis in subjects exposed to fluoride containig drinking water at different age. (external link)

Academic literature review

• Inge Fristad; Sivakami Rethnam Haug; Asgeir Bårdsen (2024). Biological properties versus solubility of endodontic sealers and cements. (external link)
• Asgeir Bårdsen; Marit Midtbø (2018). Tandskader og eksterne rodresorptioner. (external link)
• Sivakami Rethnam Haug; Inge Fristad; Marit Slåttelid Skeie et al. (2014). Kehittymässä olevien pysyvien hampaiden pulpavaurioiden hoidossa noudatettavia biologisia periaatteita (=Biological principles for treatment of immature permanent teeth with pulpal pathosis). (external link)
• Nils Skaug; Trond Inge Berge; Asgeir Bårdsen (2005). Akuta infektioner. (external link)
• Nils Skaug; Trond Inge Berge; Asgeir Bårdsen (2005). Akutte infeksjoner. (external link)

Conference lecture

• Magnus Holmøy Bratteberg; Dorina Sula Thelen; Kristin Klock et al. (2018). Multiple episodes of traumatic dental injuries and related life course events. (external link)
• Asgeir Bårdsen; Cecilie Gudveig Gjerde; Gro Christin Knudsen (2005). Gråt og tenners gnissel - akuttpasienten i tannlegepraksis. (external link)
• Kjell Bjorvatn; Wondwossen Fantaye; Shifera Degu et al. (2002). Dental fluorosis in the deciduous dentition of Ethiopian children. (external link)
• Nina J. Wang; Asgeir Bårdsen (2002). Risk factors and risk periods for development of dental fluorosis. (external link)
• Asgeir Bårdsen (2002). Rasjonell håndtering av akutte endodontiske problemstillinger. (external link)
• Wondwossen Fataye; Anne-Kristine Nodrehaug Åstrøm; Asgeir Bårdsen et al. (2000). Perception of dental fluorosis among adolescents in urban areas of Ethiopia. (external link)
• K Mashoto; Anne-Kristine Nodrehaug Åstrøm; Asgeir Bårdsen (2000). Dental fluorosis and subjective oral health indicators -preliminary results from a study of secondary school children in northern Tanzania. (external link)
• Asgeir Bårdsen; Fantaye Wonvossen; Anne Nordrehaug Åstrøm (1999). Perceptions of dental fluorosis among adolescents in Ethiopia. (external link)
• Asgeir Bårdsen (1999). Dental fluorosis in subjects exposed to fluoride containing drinking water at different age. (external link)
• Arild Kvalheim; Kjell Bjorvatn; Asgeir Bårdsen (1999). Significance of elevation on fluoride binding capacity of Ethiopian soils. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1998). Dental fluorosis in subjects exposed to fluoride containing drinking water at different age. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen; R Tekla-Haimanot (1998). Defluoridation of drinking water by the use of clay/soil. (external link)
• A Kvalheim; Kjell Bjorvatn; Asgeir Bårdsen et al. (1998). Significance of elevation on fluoride binding capaciyt of Ethiopian soils. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1998). Risk of dental fluorisis when exposed to high-fluoride water at different age. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1996). Fluoride sorption isoterm on fired clay. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen; Redda Tekle-Haimanot (1996). Defluoridation of drinking water by the use of clay/soil. (external link)
• Asgeir Bårdsen (1996). Sesongmessige variasjoner i fluoridinnhold i norsk grunnvann. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen; Marian Kjellevold (1996). Lateritt, et mulig medium for vannbehandling i høyfluorid områder i utviklingsland. (external link)

Conference poster

• Hanne Quist Christensen; Brita Ringereide Linde; Vilhjalmur Helgi Vilhjalmsson et al. (2022). A survey on the influence of dental education on the adoption and integration of technology by dental practitioners. (external link)
• Mahkameh Nicole Aria; Asgeir Bårdsen; Dorina Sula Thelen (2018). Traumatic dental injuries in an orthodontic population. (external link)
• Mohamed Ali; Manal Mustafa; Asgeir Bårdsen et al. (2017). Effect of MTA®, Biodentine™, and TotalFill® on proliferation, osteogenic and angiogenic differentiation of human bone marrow stem cells in vitro. (external link)
• Mohamed Ali; Manal Mustafa; Asgeir Bårdsen et al. (2017). Bioceramics’ Effect On Strength Of Immature Teeth Treated With Regenerative-Endodontic-Protocol. (external link)
• Solfjeld Ane F.; Line E. Ranheim; Asgeir Bårdsen et al. (2016). Use of engine driven and hand instrumentation techniques in undergraduate clinic. A study of case difficulty, procedural errors and user satisfaction.. (external link)
• Anca Virtej; Asgeir Bårdsen; Sivakami Rethnam Haug et al. (2013). Sequelae after traumatic dental injury in an adult patient. A case report. (external link)
• Claus Ungerechts; Asgeir Bårdsen; Inge Fristad (2013). Instrument fracture in root canals - where, why, when and what? A study from a student clinic. (external link)
• Ray Masumo; Asgeir Bårdsen; Anne Nordrehaug Åstrøm (2011). Applicability of the Early Childhood Oral health Impact Scale (ECOHIS). (external link)
• Vilhjalmur Helgi Vilhjalmsson; Kristin Klock; Kjell Størksen et al. (2008). Aesthetics of implant-supported single crowns in the anterior maxilla. (external link)
• Vilhjalmur Helgi Vilhjalmsson; Gro C. Knudsen; Bjarte Grung et al. (2008). Autotransplantation of teeth to the maxillary anterior region. (external link)
• Dorina Sula Thelen; Tordis Agnete Trovik; Asgeir Bårdsen (2008). Impact of dental traumatic injuries with treatment need on the oral health-related quality of life of adolescents in Tirana, Albania. (external link)
• David Pendrys; Ola Haugejorden; Asgeir Bårdsen et al. (2005). Enamel fluorosis, non-fluoride opacities, and caries among Norwegian children. (external link)
• Ruan Ping; YZ Qun; WZ Lun et al. (2004). Dental fluorosis in rural schoolchildren in the Shaanxi province, China. (external link)
• Ruan Ping; WZ Lun; YZ Qun et al. (2004). Dental fluorosis in primary teeth a study in rural schoolchildren in Shaanxi province, China. (external link)
• Asgeir Bårdsen; Bjarte Grung; Gro Knudsen et al. (2003). Root resorption in autotransplanted teeth: a study from Rogaland, Norway. (external link)
• Inge Fristad; Elisabeth Haugarvoll Helland; Asgeir Bårdsen (2003). Self-assessment and quality registration in an undergraduate endodontic curriculum. (external link)
• Fantaya Wondvossen; Anne Nordrehaug Åstrøm; Asgeir Bårdsen et al. (2002). Perception of fluorotic teeth among Ethiopian children and mothers. (external link)
• Asgeir Bårdsen; Kristin Klock; Kjell Bjorvatn (1996). Dental fluorosis in selected areas in Norway. Risk factors. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1995). Fluoride content of Norwegian ground water. (external link)

Doctoral thesis (PhD)

• Jian Ping Ruan; Kjell Bjorvatn; Anne Nordrehaug Åstrøm et al. (2006). Fluoride, dental fluorosis and caries in China. (external link)
• Fantaye Wondwossen; Asgeir Bårdsen; Kjell Bjorvatn (2005). Dental fluorosis in Ethiopia. An assessment of dental fluorosis and relation to dental caris as well as the social acceptance of fluorotic teeth in rural and urban areas. (external link)
• Asgeir Bårdsen (1999). A study in fluoride in groundwater and dental fluorosis. (external link)

Editorial/Leader article

• Asgeir Bårdsen (2011). Summary of: Sealing ability of mineral trioxide aggregate, glass ionomer cement and composite resin when repairing large furcal perforations. (external link)

Lecture

• Inge Fristad; Asgeir Bårdsen; Knudsen Gro Christine (2012). Endodontiens "sjoner". Utvalgte endodontiske problemområder. Reprise. (external link)
• Inge Fristad; Asgeir Bårdsen; Knudsen Gro Christine (2011). Endodontiens "sjoner". Utvalgte endodontiske problemområder. (external link)
• Asgeir Bårdsen (2007). Rotresorpsjon - bare rot?. (external link)
• Asgeir Bårdsen; Gro C. Knudsen (2006). Loosing your nerve? Håndtering av akutte smerter og infeksjoner i tannlegepraksis. (external link)
• Asgeir Bårdsen; Gro C. Knudsen (2006). Endodontsik taktikk og diagnostikk. (external link)
• Asgeir Bårdsen (2004). Tenner på flyttefot - hvordan trives de?. (external link)
• Asgeir Bårdsen (1996). Evaluering av studiet og undervisningen ved Det odontologiske fakultet, UiB. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1995). Fluoride adsorption isotherm in fired clay. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen (1995). On defluoridation of drinking water by the use of fired clay. (external link)
• Asgeir Bårdsen (1994). Fluorid i norsk grunnvann - en ukjent bakgrunnsfaktor for oral helse. (external link)

Master’s thesis

• Malin Viktoria Jonsson; Helene Haug; Amanda Karoline Helsøe Andresen et al. (2021). Når kart og terreng ikke stemmer – CBCT av oppspiste røtter. (external link)

Research report

• Anne Isine Bolstad; Asgeir Bårdsen; Inge Fristad et al. (1996). Evaluering av studiet og undervisningen ved Det odontologiske fakultet. (external link)
• Asgeir Bårdsen; Kjell Bjorvatn (1995). Fluoride adsorption isotherm in fired clay. (external link)
• Kjell Bjorvatn; Asgeir Bårdsen (1995). On defluoridation of drinking water by the use of fired clay. (external link)

See a complete overview of publications in NVA.