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  Indian J Med Microbiol
 

Figure 2: Master cast of mandibular dental arch with two natural teeth retained ball superstructure. Fitting surface of O-ring-retained mandibular overdentures with Metal housing and O-ring in place O-ring-retained maxillary overdentures

Figure 2: Master cast of mandibular dental arch with two natural teeth retained ball superstructure. Fitting surface of O-ring-retained mandibular overdentures with Metal housing and O-ring in place O-ring-retained maxillary overdentures