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Doctoral position in Odontological Science

Project title: Non-surgical and surgical treatment of peri-implantitis 

The Department of Periodontology is located at the Institute of Odontology at the Faculty of Medicine at Sahlgrenska Academy, University of Gothenburg.

General information about being a doctoral student at the University of Gothenburg can be found on the university’s doctoral student pages:    


The PhD education in Odontological Science comprises carrying out a scientific project and completing at least 30 credits of courses at third-cycle level. The doctoral student must also write a scientific compilation thesis or monograph corresponding to at least 120 credits. For more information about third-cycle studies at Sahlgrenska Academy, see

Project: Peri-implantitis is a pathological condition occurring in patients with dental implants. It is characterized by inflammation in peri-implant tissues and loss of supporting bone. Moderate and severe forms of peri-implantitis occur in about 15% of patients with dental implants and treatment of the condition is demanding, both technically and in terms of resources. Treatment approaches are based on removal of bacterial biofilm from implant components. The use of air-polishing with glycine powder is a promising method for surface decontamination, balancing the risk for surface damage with cleaning efficacy.

The present project aims at investigating the effect of using an air-polishing device as an adjunct to non-surgical and surgical treatment of peri-implantitis. The specific aims are:
1. to evaluate the efficacy of sub-mucosal air-polishing in the non-surgical therapy of peri-implantitis.
2. to evaluate the efficacy of air-polishing in the surgical therapy of peri-implantitis.
3. to assess the risk for adverse events when using an air-polishing device in the non-surgical and surgical therapy of peri-implantitis.
4. to analyze patient-reported outcome measures following non-surgical and surgical therapy of peri-implantitis.

Evaluations are based on a randomized controlled trial including 80 patients with peri-implantitis. Initially, conventional non-surgical therapy is supplemented by the sub-mucosal use of an air-polishing device in the test group. At 6 months, persisting pathology is surgically treated and subjects are, again, randomized to either conventional treatment or to decontamination by air-polishing. A total follow-up of 18 months is planned. The PhD student will be part of an active research group and is to participate in the treatment and follow-up of study participants. The PhD student is expected to contribute to data analysis and data presentation. The project requires that the doctoral student master the Swedish language in speech and writing as the data collection involves contacts with informants who speak Swedish.

Education at third-cycle level comprises four years of full-time study, and leads to a doctoral degree. As part of your employment as a doctoral student, you may have departmental duties corresponding to up to 20 % of full-time employment, distributed throughout your study period. Departmental duties usually consist of teaching at first- and second-cycle levels, but may also include research and administration.    


Education at third-cycle level requires general eligibility and specific eligibility as set out in the general syllabus for the subject.  

The general eligibility requirements for education at third-cycle level are:    
1. having completed a degree at second-cycle level, or
2. the fulfilment of course requirements totalling at least 240 credits, of which at least 60 credits must be at second-cycle level, or  
3. the acquisition of equivalent knowledge in some other way, either in Sweden or abroad.  
Specific entry requirements for this subject, according to the general syllabus, are: 
having completed the English B/6 course or is considered to have acquired equivalent knowledge through previous studies.    

Assessment criteria   

The selection of applicants who are considered to have the ability required to benefit from the study programme and who meet the general and specific eligibility requirements are assessed based on the following documented qualifications:- specific knowledge and skills within the subject area and related research fields
– experience of scientific theory and relevant research methodology
– scientific analysis and presentation verified through thesis, degree project, scientific journals or the like. 

It is desirable that the applicant has a background in a dental profession (dentist, dental hygienist) and has experience in handling patient file systems commonly used within Swedish dental care. Documented experience in statistical analysis and the use of statistical software is of merit.  


Once you have been admitted for education at third-cycle level, you will be employed as a doctoral student at the University of Gothenburg. The provisions for employment as a doctoral student can be found in ordinance SFS 1993:100. Initial employment as a doctoral student may apply for a maximum of one year, and may be renewed by a maximum of two years at a time. A doctoral student may be employed as a doctoral student for a maximum of eight years, but the total period of employment may not be longer than the equivalent of full-time education at third-cycle level for four years.   

Location: Sahlgrenska Academy, Institute of Odontology, Department of Periodontology. Extent: 100%. First day of employment: as agreed.  

The University applies a local agreement on salaries for doctoral students.    

Contact information 

For more information about the project please contact the principal supervisor, 
Jan Derks, Associate Professor, Institute of Odontology, Department of Periodontology,


Union representatives at the University of Gothenburg can be found here:     


You can apply to be admitted for education at third-cycle level via the University of Gothenburg’s recruitment portal. It is your responsibility to ensure that the application is complete as per the vacancy notice, and that the University receives it by the final application deadline.   

You must include the following, in pdf format

  • Personal letter
  • CV
  • Diploma and transcripts showing that you meet with the general entry requirement
  • Proof of completion of  English 6 course or the acquired equivalent knowledge through previous studies

If your degree is from a university outside of Sweden, make sure that you attach a diploma and full transcripts that makes assessing your degree easier 

If your degree has not been verified by a Swedish authority you need to provide contact details to the issuing university, registrar or similar, that can verify the degree at our request.

For information on what you need to submit in order to fulfill the English language requirement see  

Applications must be received by: 2022-08-08

Information for International Applicants 

Choosing a career in a foreign country is a big step. Thus, to give you a general idea of what we and Gothenburg have to offer in terms of benefits and life in general for you and your family/spouse/partner please visit: 


The University works actively to achieve a working environment with equal conditions, and values the qualities that diversity brings to its operations.

Salaries are set individually at the University.

In accordance with the National Archives of Sweden’s regulations, the University must archive application documents for two years after the appointment is filled. If you request that your documents are returned, they will be returned to you once the two years have passed. Otherwise, they will be destroyed.

In connection to this recruitment, we have already decided which recruitment channels we should use. We therefore decline further contact with vendors, recruitment and staffing companies.

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