Helena Fransson

Helena Fransson
Malmö University | mah · Department of Endodontics

DDS, Dr Odont

About

35
Publications
11,325
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967
Citations
Introduction
The Scandinavian Endodontic Research Collaboration (EndoReCo) has been formed to focus on some of the defined knowledge gaps within endodontics. Since the frequent procedure, root canal treatment, rather often results in persistant periapical lesions with unknown consequences for the individual and for the society, the overall aim of this collaboration is to explore and analyse these consequencies. The EndoReCo is not run by a single person, the driving force is rather the stimulus of working together with a mutual aim. The members of the EndoReCo have regular meetings and are striving to achieve a stimulating environment for the current 6 PhD-students involved in the projects.
Additional affiliations
January 2019 - December 2020
University of Gothenburg
Position
  • Researcher
Education
August 1992 - June 1998
Lund University
Field of study

Publications

Publications (35)
Article
Full-text available
Essentially, root fillings are performed to preserve natural teeth. Over time, however, some root-filled teeth will inevitably be extracted. The aim of this historical prospective cohort study in the adult Swedish population was to identify factors associated with extractions within 5 y of registration of a root filling. The cohort consisted of all...
Article
Aim: To investigate the 5-year frequency of additional treatments in relation to the number of reported root filled canals in molar teeth in Sweden. Methodology: The cohort included first and second molars in adult individuals who were registered with a root filling performed in 2009. Treatment codes corresponding to root fillings of teeth with fr...
Article
In many clinical cases a dentist may feel certain when for example diagnosing, deciding on treatment, or assessing the prognosis – in other cases many dentists may feel a degree of doubt or uncertainty. This paper aims to explore the philosophical concept of uncertainty and its different dimensions, using the condition “persistent apical periodonti...
Article
Background: The exposed pulp has been the topic of numerous studies, but well-designed and well-executed comparative trials on the outcome and treatment of these teeth have been limited. Objectives: This study was conducted to answer the following questions: in patients with non-traumatic pulpitis associated with no or non-spontaneous pain in pe...
Article
Full-text available
Aim: To describe the decision-making process of the general dental practitioner (GDP) underlying the choice of coronal restoration of a root filled tooth. Methodology: GDPs were strategically selected with respect to gender, age, undergraduate dental school, service affiliation and duration of professional experience. Semi-structured in-depth inte...
Article
Full-text available
Objectives: Direct cost for methods of prediction also named risk assessment in dentistry may be negligible compared with the cost of extensive constructions. On the other hand, as risk assessment is performed daily and for several patients in general dental practice, the costs may be considerable. The objective was to summarize evidence in studies...
Article
Aim: To evaluate the 10-year survival rate of root filled teeth treated by general dental practitioners (GDPs), and to identify possible prognostic factors. Methodology: In 2006, 3 676 individuals had at least one tooth root filled by a GDP within the Norrbotten Public Dental Service, Sweden. Over the next 10 years, 331 individuals died and were...
Article
Objective: To contribute with information on cost-effectiveness of pulp capping and root canal treatment of posterior permanent vital teeth in children and adolescents with pulp exposures due to caries. Material and methods: Cost-effectiveness by means of a Markov simulation model was studied in a Scandinavian setting. In a simulated 12-year-old pa...
Article
Full-text available
This position statement on the management of deep caries and the exposed pulp represents the consensus of an expert committee, convened by the European Society of Endodontology (ESE). Preserving the pulp in a healthy state with sustained vitality, preventing apical periodontitis and developing minimally invasive biologically based therapies are key...
Article
Objective: To develop and assess a set of criteria to grade inflammation including relative area of inflammation in periapical lesions in endodontically treated teeth. Material and methods: A set of criteria was developed, encompassing data on: Lymphocytes, denoting chronic inflammation, were graded 0 (occasional) to 4 (heavy/dense inflammation). P...
Article
Background After root canal treatment, a choice is made between different coronal restorations which in the long run could affect the survival of the tooth. Objective To compare demographic characteristics between individuals choosing an indirect coronal restoration (crown, inlay/onlay) and individuals choosing other restorations after completion...
Article
Objective: The aim of this study was to re-assess the adoption of certain endodontic technology and central treatment principles of root canal treatments as advocated by guidelines presented by the European Society of Endodontology. Material and methods: The questionnaire included the same questions in 2003 and 2013. The general dental practitioner...
Article
Full-text available
Aim: To investigate the fees charged by Swedish dentists for root fillings, coronal restorations and further dental interventions during a follow-up period of 5-6 years. Methodology: A total of 248,299 root fillings were linked with the tooth, the patient and the provider and entered into the Swedish Social Insurance Agency register in 2009. The...
Article
Full-text available
Introduction The aim of this study was to evaluate the frequencies of nonsurgical retreatment, root-end surgery, extraction, and further restoration of root-filled teeth in Sweden in 2009 during a follow-up period of 5 years and to compare the outcomes in teeth restored with direct or indirect restorations. Methods Data from the Swedish Social Ins...
Article
Deep caries presents a dilemma in terms of which treatment that will render an optimal prognosis by maintaining pulp vitality with absence of apical pathology. Previously, 2 randomized clinical trials were performed testing the short-term effects of stepwise carious tissue removal versus nonselective carious removal to hard dentin with or without p...
Article
Introduction: The aim of this blind, in vivo, randomized controlled trial was to evaluate the antibacterial effect of Nd:YAG laser irradiation in endodontic treatment of single-rooted teeth with apical periodontitis. The hypothesis was that mechanical enlargement of the root canal and Nd:YAG laser irradiation would yield more negative bacterial sa...
Article
Purpose: To evaluate the available evidence on pulp capping procedures and root canal treatment in young permanent teeth with vital pulps exposed by caries. Methods: The study was conducted as a systematic review of the literature. Three databases, PubMed, Web of Knowledge, and The Cochrane Library were searched. Reference lists of relevant arti...
Conference Paper
Objectives: To compare the survival of teeth root-filled in Sweden in 2009 in relation to type of restoration and tooth-group. Methods: The database at the Swedish Social Insurance Agency containing information on treatments was used to identify all teeth in Sweden that were root-filled during 2009, by searching for the treatment codes correspondi...
Conference Paper
Objectives: To study some demographic variables of individuals registered receiving a root canal filling in a tooth that during the subsequent 5 to 6 years was registered as being extracted in comparison of individuals retaining the equivalent root-filled tooth during the same period. Methods: Data from the Swedish Social Insurance Agency were ana...
Article
Full-text available
Introduction: The aim was to assess survival in the Swedish population of teeth treated by nonsurgical root canal treatment during 2009. Methods: Data from the Swedish Social Insurance Agency were analyzed by Kaplan-Meier analysis to assess cumulative tooth survival during a period of 5-6 years of all teeth that were root-filled during 2009. Re...
Article
To study the 20-year survival rate and periapical status of root filled teeth in a Swedish population requiring high cost dental care and to identify factors related to survival and normal periapical status at follow-up. The study population comprised 104 patients selected from four local health insurance districts with treatment plans including ra...
Article
Abstract The aim was to update a systematic review of pulp capping and partial pulpotomy by Olsson et al. (2006), by evaluating new evidence of formation of a hard tissue barrier after pulp capping and partial pulpotomy of experimental exposures in humans. PubMed (2005-01-01 to 2014-03-01) and CENTRAL were searched using specific keywords. Hand sea...
Article
Composite resin is used extensively for restoration of teeth with vital pulps. Although cell culture studies have disclosed harmful effects on pulpal cells, any untoward clinical effects, manifest as adverse pulpal responses, have yet to be determined. This study comprises a systematic review, designed to address the question of whether the risk of...
Article
To study how products released from different bacteria in a deep carious lesion affect the metabolic activity of odontoblast-like cells and their ability to produce the major organic component of dentine, collagen 1. MDPC-23 cells were exposed to supernatants from biofilm cultures of strains isolated from the deepest part of a carious lesion as wel...
Article
The aim was to evaluate the efficacy of various types of lasers used as an adjunct to chemo-mechanical disinfection of infected root canals with the outcome measures 'normal periapical condition' or 'reduction of microbial load'. PubMed, CENTRAL and ISI Web of Knowledge literature searches with specific indexing terms and a subsequent hand search w...
Thesis
Full-text available
The overall aim of this thesis was to study some aspects of the repair of the dentine barrier, especially in conjunction with dental pulp capping. Understanding the events leading to the healing of the dentine and pulp, and hence successfully preserving the vitality and functions of the tooth, would lead to a scientific basis for a less invasive tr...
Conference Paper
Objectives: Long term follow-up data based on randomised clinical trials are needed in relation to deep caries treatment. The aim of the present trial is to investigate the beneficial and harmful long term effects of stepwise excavation during two visits versus one completed excavation of deep caries in permanent teeth in adults. Methods: Consecu...
Article
To characterize the hard tissue formed in human teeth experimentally pulp capped either with calcium hydroxide or with Emdogain Gel (Biora AB, Malmö, Sweden) - a derivative of enamel matrix (EMD), using two markers for dentine; dentine sialoprotein (DSP) and type 1 collagen (Col I). Affinity-purified rabbit anti-Col I and anti-DSP polyclonal antibo...
Article
Full-text available
Less invasive excavation methods have been suggested for deep caries lesions. We tested the effects of stepwise vs. direct complete excavation, 1 yr after the procedure had been carried out, in 314 adults (from six centres) who had received treatment of a tooth with deep caries. The teeth had caries lesions involving 75% or more of the dentin and w...
Article
Full-text available
To evaluate the evidence on the formation of a hard tissue barrier after pulp capping in humans. A PubMed and CENTRAL literature search with specific indexing terms and a hand search were made. The authors assessed the level of evidence of each publication as high, moderate or low. Based on this, the evidence grade of the conclusions was rated as s...
Article
Full-text available
To investigate the effect of Emdogain Gel (Biora AB, Malmo, Sweden), consisting of a enamel matrix derivative (EMD) in a propylene glycol alginate (PGA) vehicle, on experimentally exposed human pulps and to register postoperative symptoms. Nine pairs of contralateral premolars scheduled for extraction on orthodontic indications were included. Follo...
Article
Full-text available
The aim of this study was to compare the courses in endodontics and to assess the treatment quality in the student clinics in two dental schools, in Malmö, Sweden and Paris, France. A further aim was to improve the curriculum development in Paris 5 and Malmö by testing student exchange programmes. The comparison was based on the guidelines for unde...

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Projects

Projects (4)
Project
With a reflection exercise we attempt to teach dental students about uncertainty and how to distinguish between their personal limitations from those which are general to the endodontic field. The objective is to increase the students feeling of comfort with uncertainty when assessing the risk for exacerbation in root filled teeth with persistant apical periodontitis.
Project
By following non-surgical root canal treatment in Sweden, the aim is to study the: • proportion of tooth survival • life-table of root filled teeth with data on restorative treatment, endodontic retreatment, apical surgery and emergency treatment. The longevity of root filled teeth will also be studied from a societal perspective.