ROEN0310

I 29 research _ primary teeth endo I roots3_2010 The mortal amputations were attributed partly to Toxavit-devitalisationandpartlytotreatmentofgan- grenous teeth. Devitalised teeth were treated in the same manner as vital teeth. Gangrenous teeth were treatedwithdifferentmethods.Simplemortalampu- tations were performed in a manner similar to a vital amputation. Root-canal fillings (partial or complete) weresimplyfilledwithpaste.Insomecases,theroots were finished through artificial fistulation, which was done interradicularly—mostly with a Cavit lifter through the mucosa—and in a few cases after the mucosa had been shifted with a turbine bur. All endodontic measures, including the fillings, were performed in one appointment. Additional vis- its were only necessary when massive bleeding oc- curred, when a composite filling was required and in devitalisation cases. In the first two cases, the cavity was filled with excess N2 or with zinc oxide-eugenol following N2 application. N2 application and imme- diate amalgam sealing of the cavity without lining materials is still the most time-saving method. In exceptional cases, stainless-steel crowns served as definitive restoration. _Results A total of 559 primary teeth were treated endo- dontically between 1992 and 1998. I treated about 39%ofthesemyself.Pulpotomieswereconductedon 460 primary molars, 29 to Toxavit devitalisation with subsequentmortalamputationwasperformedon29 primarymolars.Ofthe70gangrenousprimarymolars treated, 37 were treated by simple mortal ampu- tation. In 22 cases, root filling or mortal amputation was followed by artificial fistulation. Root-canal treatment of 11 gangrenous primary molars was performed without fistulation. The following gives the average age of the patients who underwent a pulpotomy: maxillary first molar: 7 years, 6 months maxillary second molar: 7 years, 5 months mandibular first molar: 6 years, 6 months mandibular second molar: 6 years, 6 months After treatment, 11.8% (n = 66) of the young patientsdidnotreturntothepractice,whichleftonly 88.2% of the original patient group (n = 493) for Figs. 5–9_13-year-old patient. Treatment of the lower gangrenous first primary molar. Fig. 5_11.04.1995: Ante treatment. Fig. 6_11.04.1995: Post mortal-amputation. Fig. 7_11.04.1995: Natural fistula represented. Fig. 8_11.04.1995: Bleeding of the pulp, pulp-chamber completely filled by N2. Fig. 9_17.04.1995: Fistula has disappeared (05.01.1996: panoramic X-ray shows treated tooth still in situ; 30.01.1997: file-card shows permanent first premolar erupted). Fig. 5 Fig. 6 Fig. 9 Fig. 8 Fig. 7