Article: Volume 13 Number 1 Page 17 - January 2020

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  Orth Update 2020; 13: 17-18

Orthodontics:  Achieving Correction of a Posterior Scissorbite with a Mini-screw

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Abstract: Scissorbite correction of posterior teeth can often be challenging. For adolescent patients, they may occur due to late eruption of the second permanent molar teeth after appliances are removed, or due to operator preference not to include them on the appliance. This case report describes a 17-year-old patient who had previously been treated with fixed appliances but did not originally have second permanent molars bonded. Complete correction of the scissorbite on the UR7 was effectively achieved in 14 weeks using a minimal system comprising only a palatal mini-screw, molar band and elastomeric chain.

Clinical relevance: Mini-screws placed in a palatal position can provide an effective way to correct posterior scissorbites.

Author notes: Jason Matharu, BDS, DDS, FDS Orth RCS(Edin), MOrth RCS(Edin), MJDF RCS(Eng), MA(Cantab), PGDip(RAM), LRAM, Consultant in Orthodontics, Department of Orthodontics and Oral and Maxillofacial Surgery, Lucy Macey-Dare, BDS, FDS(Orth) RCSEng, MSc, MOrth RCSEng, Consultant in Orthodontics, Department of Orthodontics and Oral and Maxillofacial Surgery, James Dickson, BDS, DOrth RCSEng, FDS RCPSGlas, LDS RCSEng, MOrth RCSEng, MSc, Consultant in Orthodontics, Department of Orthodontics and Oral and Maxillofacial Surgery and Jerry Farrier, MBBch, BDS, FDS RCS(Edin), FRCS(Eng), FRCS(I), FRCS(OMFS), Consultant in Oral and Maxillofacial Surgery, Department of Orthodontics and Oral and Maxillofacial Surgery, Gloucester Royal and Cheltenham General Hospitals, Gloucester, UK.

Objective: To understand the clinical application and effectiveness of palatal mini-screws alone without the need to use any other orthodontic appliance or system when correcting scissorbites.