A toothbrush (1710, 2910A) comprising: a handle and a head (1714, 1814, 1914, 2014, 2114, 2514, 2914) connected to said handle by a neck element, and a mechanical vibratory device which causes the head (1714, 1814, 1914, 2014, 2114, 2514, 2914) to vibrate, said mechanical vibratory device being located in the cleaning head (1714, 1814, 1914, 2014, 2114, 2514, 2914) or in a region adjacent to the cleaning head (1714, 1814, 1914, 2014, 2114, 2514, 2914) and operatively connected to an electric power source, via electrical connections running in the neck, and wherein said head (1714, 1814, 1914, 2014, 2114, 2514, 2914) is flexibly mounted to the handle, characterized in that the head (1714, 1814, 1914, 2014, 2114, 2514, 2914) has a flexible upper face with fingers (1816, 1916, 2016, 2116, 2216, 2316, 2416, 2516, 2616, 2716, 2816, 2916) flexibly mounted thereon, and ribs (1824, 1924, 2024, 2124, 2224, 2324, 2424) extending from sides of the fingers (1816, 1916, 2016, 2116, 2216, 2316, 2416, 2516) to the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522); wherein each finger (1816, 1916, 2016, 2116) is connected by two ribs (1824, 1924, 2024, 2124) to the upper face (1822, 1922, 2022, 2122) or multiple fingers (2216, 2316, 2416, 2516), interconnected to each other and to the upper face (2222, 2322, 2422) 2522) by ribs forming a web between the fingers (2216, 2316, 241), are connected by two ribs (2224, 2324, 2424), one on each side of the multiple fingers (2216, 2316, 2416), to the upper face (2222, 2322, 422), wherein said two ribs (1824, 1924, 2024, 2124, 2224, 2324, 2424) being oriented at approximately 45° to the longitudinal axis of the toothbrush (1710, 2910A), so that when the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522) is stretched the ends of said two ribs (1824, 1924, 2024, 2124, 2224, 2324, 2424) anchored to the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522) move away from each other, thereby causing lateral movement of the finger (1816, 1916, 2016, 2116) or the multiple fingers (2216, 2316, 2416, 2516) relative to the longitudinal axis of the toothbrush (1710, 2910A), and thus during use flexure of the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522) in compression or expansion relative to the longitudinal axis of the toothbrush (1710, 2910A) causes fingers (1816, 1916, 2016, 2116, 2216, 2316, 2416, 2516) to move in a lateral direction relative to the longitudinal axis of the toothbrush (1710, 2910A). a handle and a head (1714, 1814, 1914, 2014, 2114, 2514, 2914) connected to said handle by a neck element, and a mechanical vibratory device which causes the head (1714, 1814, 1914, 2014, 2114, 2514, 2914) to vibrate, said mechanical vibratory device being located in the cleaning head (1714, 1814, 1914, 2014, 2114, 2514, 2914) or in a region adjacent to the cleaning head (1714, 1814, 1914, 2014, 2114, 2514, 2914) and operatively connected to an electric power source, via electrical connections running in the neck, and wherein said head (1714, 1814, 1914, 2014, 2114, 2514, 2914) is flexibly mounted to the handle, the head (1714, 1814, 1914, 2014, 2114, 2514, 2914) has a flexible upper face with fingers (1816, 1916, 2016, 2116, 2216, 2316, 2416, 2516, 2616, 2716, 2816, 2916) flexibly mounted thereon, and ribs (1824, 1924, 2024, 2124, 2224, 2324, 2424) extending from sides of the fingers (1816, 1916, 2016, 2116, 2216, 2316, 2416, 2516) to the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522); wherein each finger (1816, 1916, 2016, 2116) is connected by two ribs (1824, 1924, 2024, 2124) to the upper face (1822, 1922, 2022, 2122) or multiple fingers (2216, 2316, 2416, 2516), interconnected to each other and to the upper face (2222, 2322, 2422) 2522) by ribs forming a web between the fingers (2216, 2316, 241), are connected by two ribs (2224, 2324, 2424), one on each side of the multiple fingers (2216, 2316, 2416), to the upper face (2222, 2322, 422), wherein said two ribs (1824, 1924, 2024, 2124, 2224, 2324, 2424) being oriented at approximately 45° to the longitudinal axis of the toothbrush (1710, 2910A), so that when the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522) is stretched the ends of said two ribs (1824, 1924, 2024, 2124, 2224, 2324, 2424) anchored to the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522) move away from each other, thereby causing lateral movement of the finger (1816, 1916, 2016, 2116) or the multiple fingers (2216, 2316, 2416, 2516) relative to the longitudinal axis of the toothbrush (1710, 2910A), and thus during use flexure of the upper face (1822, 1922, 2022, 2122, 2222, 2322, 2422, 2522) in compression or expansion relative to the longitudinal axis of the toothbrush (1710, 2910A) causes fingers (1816, 1916, 2016, 2116, 2216, 2316, 2416, 2516) to move in a lateral direction relative to the longitudinal axis of the toothbrush (1710, 2910A).